microeconomics for public decisions anne c. steinemann

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Microeconomics for Public Decisions Anne C. Steinemann

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Page 1: Microeconomics for Public Decisions Anne C. Steinemann

Microeconomics for Public DecisionsAnne C. Steinemann

Page 2: Microeconomics for Public Decisions Anne C. Steinemann

The Economy as a System

• Figure 1-1

Page 3: Microeconomics for Public Decisions Anne C. Steinemann

The Economic System Within the

Ecosystem

• Figure 1-2

Page 4: Microeconomics for Public Decisions Anne C. Steinemann

The Demand Curve

• Figure 2-1

Page 5: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Demand

• Figure 2-2

Page 6: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Demand

• Figure 2-3

Page 7: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Quantity Demanded

• Figure 2-4

Page 8: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Quantity Demanded

• Figure 2-5

Page 9: Microeconomics for Public Decisions Anne C. Steinemann

The Supply Curve

• Figure 2-6

Page 10: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Supply

• Figure 2-7

Page 11: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Supply

• Figure 2-8

Page 12: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Quantity Supplied

• Figure 2-9

Page 13: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Quantity Supplied

• Figure 2-10

Page 14: Microeconomics for Public Decisions Anne C. Steinemann

Price Elasticity of Demand

• Page 29 ED =Qf −Qi( ) /Qi

Pf −Pi( ) / Pi

Page 15: Microeconomics for Public Decisions Anne C. Steinemann

Price Elasticity of Demand

• Figure 2-11

Page 16: Microeconomics for Public Decisions Anne C. Steinemann

Estimates of the Price Elasticity of

DemandGoodGood Price Elasticity of Price Elasticity of

DemandDemandHousing -0.01

Residential electricity -0.13

Bread -0.15

Bus travel -0.20

Coffee -0.25

Sugar -0.30

Medical insurance -0.31

Legal services -0.37

Page 17: Microeconomics for Public Decisions Anne C. Steinemann

Elastic Demand

• Figure 2-11a

Page 18: Microeconomics for Public Decisions Anne C. Steinemann

Inelastic Demand

• Figure 2-11b

Page 19: Microeconomics for Public Decisions Anne C. Steinemann

Unitary Elastic Demand

• Figure 2-11c

Page 20: Microeconomics for Public Decisions Anne C. Steinemann

Elasticities Vary Along a Straight

Line

• Figure 2-12

Page 21: Microeconomics for Public Decisions Anne C. Steinemann

Relationship Between Price Elasticities of Demand, Price, Quantity and Total Revenue

EEDD PricePrice QuantityQuantity Total Total RevenueRevenue

inelastic increase decrease increase

inelastic decrease increase decrease

elastic increase decrease decrease

elastic decrease increase increase

unitary increase decrease no change

unitary decrease increase no change

Page 22: Microeconomics for Public Decisions Anne C. Steinemann

Price Elasticity of Supply

• Page 42 ES =Qf −Qi( ) /Qi

Pf −Pi( ) / Pi

Page 23: Microeconomics for Public Decisions Anne C. Steinemann

Derivation of the Market Demand Curve from Individual Demand Curves

PricePrice Consumer Consumer AA

Consumer Consumer BB

Total Quantity Total Quantity DemandedDemanded

P QA QB QT = QA + QB

$8 0.0 0.0 0.0

$7 2.5 0.0 2.5

$6 5.0 0.0 5.0

$5 7.5 0.0 7.5

$4 10.0 2.0 12.0

$3 12.5 4.0 16.5

$2 15.0 6.0 21.0

$1 17.5 8.0 25.5

$0 20.0 10.0 30.0

Page 24: Microeconomics for Public Decisions Anne C. Steinemann

Derivation of a Market Demand

Curve

• Figure 3-1

Page 25: Microeconomics for Public Decisions Anne C. Steinemann

Effect of an Increase in Individual Demand on

Market Demand

• Figure 3-2

Page 26: Microeconomics for Public Decisions Anne C. Steinemann

Derivation of the Market Supply Curve from Individual

Supply Curves

PricePrice Producer Producer AA

Producer Producer BB

Total Quantity Total Quantity Supplied Supplied

DemandedDemandedP QA QB QT = QA + QB

$8 8 4 12

$7 7 3.5 10.5

$6 6 3 9

$5 5 2.5 7.5

$4 4 2 6

$3 3 1.5 4.5

$2 2 1 3

$1 1 0.5 1.5

$0 0 0 0

Page 27: Microeconomics for Public Decisions Anne C. Steinemann

Derivation of a Market Supply

Curve

• Figure 3-3

Page 28: Microeconomics for Public Decisions Anne C. Steinemann

Market Demand and Market Supply

Together

• Figure 3-4

Page 29: Microeconomics for Public Decisions Anne C. Steinemann

Market Equilibrium

• Figure 3-5

Page 30: Microeconomics for Public Decisions Anne C. Steinemann

Shortage: Quantity Demanded Greater Than

Quantity Supplied

• Figure 3-6

Page 31: Microeconomics for Public Decisions Anne C. Steinemann

Surplus: Quantity Supplied Greater Than Quantity

Demanded

• Figure 3-7

Page 32: Microeconomics for Public Decisions Anne C. Steinemann

Change in Equilibrium Due to a

Supply Decrease

• Figure 3-8

Page 33: Microeconomics for Public Decisions Anne C. Steinemann

Change in Equilibrium

Due to a Demand Increase

• Figure 3-9

Page 34: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Conventionally Grown

Produce

• Figure 3-10

Page 35: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Demand for Conventionally Grown

Produce

• Figure 3-11

Page 36: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Supply for Conventionally Grown

Produce

• Figure 3-12

Page 37: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Demand for Organically Grown

Produce

• Figure 3-13

Page 38: Microeconomics for Public Decisions Anne C. Steinemann

Increase in Supply for Organically Grown

Produce

• Figure 3-14

Page 39: Microeconomics for Public Decisions Anne C. Steinemann

Effects of Change in Supply and Demand on Equilibrium Price and

Quantity

SupplySupply DemandDemand EquilibriuEquilibrium Pricem Price

EquilibriuEquilibrium m

QuantityQuantityincrease no change decrease increase

decrease no change increase decrease

no change increase increase increase

no change decrease decrease decrease

increase increase indeterminate increase

decrease increase increase indeterminate

increase decrease decrease indeterminate

decrease decrease indeterminate decrease

Page 40: Microeconomics for Public Decisions Anne C. Steinemann

Before a Tax

• Figure 3-15

Page 41: Microeconomics for Public Decisions Anne C. Steinemann

After a $2 Tax on Producers

• Figure 3-16

Page 42: Microeconomics for Public Decisions Anne C. Steinemann

After a $2 Tax on Consumers

• Figure 3-17

Page 43: Microeconomics for Public Decisions Anne C. Steinemann

Before a Subsidy

• Figure 3-18

Page 44: Microeconomics for Public Decisions Anne C. Steinemann

After a $2 Subsidy to Producers

• Figure 3-19

Page 45: Microeconomics for Public Decisions Anne C. Steinemann

After a $2 Subsidy to Consumers

• Figure 3-20

Page 46: Microeconomics for Public Decisions Anne C. Steinemann

Price Floor

• Figure 3-21

Page 47: Microeconomics for Public Decisions Anne C. Steinemann

Price Ceiling

• Figure 3-22

Page 48: Microeconomics for Public Decisions Anne C. Steinemann

Output Quota

• Figure 3-23

Page 49: Microeconomics for Public Decisions Anne C. Steinemann

Rent Control

• Figure 3-24

Page 50: Microeconomics for Public Decisions Anne C. Steinemann

Agricultural Price Supports

• Figure 3-25

Page 51: Microeconomics for Public Decisions Anne C. Steinemann

Supply and Demand with a Price Cap on

Electricity

• Figure 3-26

Page 52: Microeconomics for Public Decisions Anne C. Steinemann

Consumer Surplus (A)

• Figure 4-1

Page 53: Microeconomics for Public Decisions Anne C. Steinemann

Willingness to Pay for Park Visits

• Figure 4-2

Page 54: Microeconomics for Public Decisions Anne C. Steinemann

Demand Curve for Park Visits

• Figure 4-3

Page 55: Microeconomics for Public Decisions Anne C. Steinemann

Effect of a Price Change

• Figure 4-4

Page 56: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Consumer

Surplus

• Figure 4-5

Page 57: Microeconomics for Public Decisions Anne C. Steinemann

Indifference Curves for an Individual

Consumer

• Figure 4-6

Page 58: Microeconomics for Public Decisions Anne C. Steinemann

Substitution and Income Effects for a

Normal Good

• Figure 4-7

Page 59: Microeconomics for Public Decisions Anne C. Steinemann

Substitution and Income Effects for an

Inferior Good

• Figure 4-8

Page 60: Microeconomics for Public Decisions Anne C. Steinemann

Budget Line for Budget Constrain of

$80

• Figure 4-9

Page 61: Microeconomics for Public Decisions Anne C. Steinemann

Point of Maximum Utility

• Figure 4-10

Page 62: Microeconomics for Public Decisions Anne C. Steinemann

Income Expansion Path

• Figure 4-11

Page 63: Microeconomics for Public Decisions Anne C. Steinemann

Derivation of Demand Curve

• Figure 4-12

Page 64: Microeconomics for Public Decisions Anne C. Steinemann

Income Grantfor Infrastructure

• Figure 4-13

Page 65: Microeconomics for Public Decisions Anne C. Steinemann

Subsidy for Infrastructure

• Figure 4-14

Page 66: Microeconomics for Public Decisions Anne C. Steinemann

Tied Grant for Infrastructure

• Figure 4-15

Page 67: Microeconomics for Public Decisions Anne C. Steinemann

Weekday CTA Rapid Rail Passenger Average Before and During Dime Time

Program

Income Income ClassClass

Before Dime Before Dime Time (Fare = Time (Fare =

$0.25)$0.25)

During Dime During Dime Time (Fare = Time (Fare =

$0.10)$0.10)Low 9,500 15,020

Moderate

8,250 10,860

High 5,100 6,410

Total 22,850 32,290

Page 68: Microeconomics for Public Decisions Anne C. Steinemann

Dime Time Weekday CTA Rapid Rail Passenger

Averages by Prior Mode of Travel

Prior Mode of Prior Mode of TravelTravel LowLow ModeratModerat

eeHighHigh TotalTotal

Dime Time 9,500 8,250 5,100 22,850

Non-Dime Time 625 380 310 1,315

Bus and Trolley 1,080 680 340 2,100

Auto Driver 895 525 400 1,820

Auto Passenger 220 75 80 375

Walk 850 380 90 1,320

Trip Not Made 1,850 570 90 2,510

Total 15,020 10,860 6,410 32,290

Page 69: Microeconomics for Public Decisions Anne C. Steinemann

Aggregate Demandfor Income Group

• Figure 4-16

Page 70: Microeconomics for Public Decisions Anne C. Steinemann

Total Changein Consumer

Surplus

• Figure 4-17

Page 71: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Consumer Surplus for Previous and New Riders

(dollars per day)

Income Income ClassClass

PreviouPrevious Riderss Riders

New New RidersRiders

Change in Change in Consumer Consumer

SurplusSurplus

Low$1,425.

00$414.00 $1,839.00

Moderate

1,237.50

$195.75 1,433.25

High 765.00 $98.25 863.25

Total$3,427.

50$708.00 $4,135.50

Page 72: Microeconomics for Public Decisions Anne C. Steinemann

Hypothetical Indifference Curves

for an Individual

• Figure A4-1

Page 73: Microeconomics for Public Decisions Anne C. Steinemann

Costs and Revenues for Meals-on-WheelsNumber Number of Meals of Meals per Dayper Day

TotalTotalRevenuRevenu

ee

VariablVariable Coste Cost

Total Total CostCost

Average Average Total Total CostCost

MarginaMarginal Costl Cost ProfitProfit

0 0 15.00 -15.00

3 18.00 7.50 22.50 7.50 2.00 -4.50

6 36.00 16.50 31.50 5.25 3.50 4.50

9 54.00 30.00 45.00 5.00 5.00 9.00

12 72.00 48.00 63.00 5.25 6.50 9.00

Page 74: Microeconomics for Public Decisions Anne C. Steinemann

Cost Curvesfor Meals-on-Wheels

• Figure 5-1

Page 75: Microeconomics for Public Decisions Anne C. Steinemann

Marginal Revenue > Average Variable

Cost

• Figure 5-2

Page 76: Microeconomics for Public Decisions Anne C. Steinemann

Marginal Revenue < Average Variable

Cost

• Figure 5-3

Page 77: Microeconomics for Public Decisions Anne C. Steinemann

Breakeven Pointand Shutdown Point

• Figure 5-4

Page 78: Microeconomics for Public Decisions Anne C. Steinemann

Short-Run Production

• Figure 5-5

Page 79: Microeconomics for Public Decisions Anne C. Steinemann

Derivation ofthe Supply Curve

• Figure 5-6

Page 80: Microeconomics for Public Decisions Anne C. Steinemann

Long-Run Average Total Cost

• Figure 5-7

Page 81: Microeconomics for Public Decisions Anne C. Steinemann

Long-Run Average Total Cost and Economies of

Scale

• Figure 5-8

Page 82: Microeconomics for Public Decisions Anne C. Steinemann

Long-Run Supply Curve for a

Competitive Firm

• Figure 5-9

Page 83: Microeconomics for Public Decisions Anne C. Steinemann

Producer Surplus

• Figure 5-10

Page 84: Microeconomics for Public Decisions Anne C. Steinemann

Decrease in Producer Surplus Due to a Decrease in Price

• Figure 5-11

Page 85: Microeconomics for Public Decisions Anne C. Steinemann

Vacant Lot Clearance Program

BudgetBudgetPart-Time Young Employees

Wage$60,00

0Fringes 6,000

Supervisory Personnel Quarter Time 5,000Two Full Time 18,000

MaterialsTrash bags, rakes

5,000

Truck rental 6,000

Total$100,0

00

Page 86: Microeconomics for Public Decisions Anne C. Steinemann

Tons of Trash Collected per Day

as a Function of Daily Use of Trucks and Labor-hours

Trucks per DayTrucks per Day

Labor-Hours per Labor-Hours per DayDay 55 1010 1515 2020

50 20 40 50 60200 65 90 116 128350 93 120 147 161500 107 134 165 187650 110 140 177 205800 110 140 183 217

Page 87: Microeconomics for Public Decisions Anne C. Steinemann

Tons of Trash Collected per Day by Cambridge

Sanitation Dept.

• Figure A5-1

Page 88: Microeconomics for Public Decisions Anne C. Steinemann

Isoquant for Output of 100 Tons per Day

• Figure A5-2

Page 89: Microeconomics for Public Decisions Anne C. Steinemann

Isoquants for Various Daily Output

Levels

• Figure A5-3

Page 90: Microeconomics for Public Decisions Anne C. Steinemann

Isoquant for Q = 60

• Figure A5-4

Page 91: Microeconomics for Public Decisions Anne C. Steinemann

Alternate Isoquants for Various Output

Levels

• Figure A5-5

Page 92: Microeconomics for Public Decisions Anne C. Steinemann

Tons of Trash Collected per Day by Cambridge

Sanitation Dept.

• Figure A5-6

Page 93: Microeconomics for Public Decisions Anne C. Steinemann

Marginal Product Curve (Q = 5K) of Production for

Fixed Amount

• Figure A5-7

Page 94: Microeconomics for Public Decisions Anne C. Steinemann

Social Surplus Under Competitive Equilibrium

Conditions

• Figure 7-1

Page 95: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to Deviations from the

Competition

• Figure 7-2

Page 96: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to a

Price Floor

• Figure 7-3

Page 97: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Total Social Surplus Due to a Price

FloorChanges in Surplus from a Changes in Surplus from a

Price FloorPrice Floor Before Price FloorBefore Price Floor After Price After Price FloorFloor ChangeChange

Consumer surplus I+II+III I -II-III

Producer surplus IV+V II+IV II-V

Social surplus I+II+III+IV+V I+II+IV -III-V

Distribution of Benefits and Distribution of Benefits and Costs of a Price FloorCosts of a Price Floor BenefitsBenefits CostsCosts NetNet

Consumers -II-III -II-III

Producers II -V II-V

Society II -II-III-V -III-V

Page 98: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to a

Price Ceiling

• Figure 7-4

Page 99: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Total Social Surplus Due to a Price

CeilingChanges in Surplus from a Changes in Surplus from a

Price CeilingPrice CeilingBefore Price Before Price

FloorFloorAfter Price After Price

FloorFloor ChangeChange

Consumer surplus I+II I+III III-II

Producer surplus III+IV+V V -III-IV

Social surplus I+II+III+IV+V I+III+V -II-IV

Distribution of Benefits Distribution of Benefits and Costs of a Price and Costs of a Price

CeilingCeilingBenefitsBenefits CostsCosts NetNet

Consumers III -II III-II

Producers -III-IV -III-IV

Society III -II-III-IV -II-IV

Page 100: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to an

Output Quota

• Figure 7-5

Page 101: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Total Social Surplus Due to a Output

QuotaChanges in Surplus from Changes in Surplus from

an Output Quotaan Output QuotaBefore Price Before Price

FloorFloorAfter Price After Price

FloorFloor ChangeChange

Consumer surplus I+II+III I -II-III

Producer surplus IV+V+VI II+IV+VI II-V

Social surplus I+II+III+IV+V+VI I+II+IV+VI -III-V

Distribution of Benefits Distribution of Benefits and Costs of an Output and Costs of an Output

QuotaQuotaBenefitsBenefits CostsCosts NetNet

Consumers -II-III -II-III

Producers II -V II-V

Society II -II-III-V -III-V

Page 102: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to a Tax

• Figure 7-6

Page 103: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Total Social Surplus Due

to a TaxChanges in Surplus from a Changes in Surplus from a TaxTax

Before Price Before Price FloorFloor

After Price After Price FloorFloor ChangeChange

Consumer surplus I+II+III I -II-III

Producer surplus IV+V+VI VI -IV-V

Government II+IV II+IV

Social surplus I+II+III+IV+V+VI I+II+IV+VI -III-V

Distribution of Benefits Distribution of Benefits and Costs from a Taxand Costs from a Tax BenefitsBenefits CostsCosts NetNet

Consumers -II-III -II-III

Producers -IV-V -IV-V

Government II+IV II+IV

Society II+IV -II-III-IV-V -III-V

Page 104: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Social Surplus Due to a

Subsidy

• Figure 7-7

Page 105: Microeconomics for Public Decisions Anne C. Steinemann

Changes in Total Social Surplus Due

to a SubsidyChanges in Changes in Surplus from a Surplus from a

SubsidySubsidy

Before Before Price FloorPrice Floor After Price FloorAfter Price Floor ChangeChange

Consumer surplus I+II I+II+VI+VII+VIII VI+VII+VIII

Producer surplus VI+X II+III+IV+VI+X II+III+IV

Government-II-III-IV-V-VI-VII-VIII-

IX-II-III-IV-V-VI-VII-VIII-

IX

Social surplus I+II+VI+X I+II+VI+X-V-IX -V-IX

Distribution of Distribution of Benefits and Costs Benefits and Costs

from a Subsidyfrom a SubsidyBenefitsBenefits CostsCosts NetNet

Consumers VI+VII+VIII VI+VII+VIII

Producers II+III+IV II+III+IV

Government-II-III-IV-V-VI-VII-

VIII-IX-II-III-IV-V

-VI-VII-VIII-IX

SocietyII+IIII+IV+VI+VII

+VIII-II-III-IV-V-VI-VII-

VIII-IX-V-IX

Page 106: Microeconomics for Public Decisions Anne C. Steinemann

Effect of a Tariff on Social Surplus

• Figure Q7-1

Page 107: Microeconomics for Public Decisions Anne C. Steinemann

Competitive and Monopolistic Markets:

Supply

• Figure 8-1

Page 108: Microeconomics for Public Decisions Anne C. Steinemann

Competitive and Monopolistic Markets:

Demand

• Figure 8-2

Page 109: Microeconomics for Public Decisions Anne C. Steinemann

Revenue for a Monopolist

Average Average Revenue Revenue (price)(price)

OutputOutputTotal Total

RevenuRevenuee

MarginaMarginal l

RevenuRevenuee

$10 1 $10 $10

9 2 18 8

8 3 24 6

7 4 28 4

6 5 30 2

5 6 30 0

4 7 28 -2

3 8 24 -4

2 9 18 -6

1 10 10 -8

Page 110: Microeconomics for Public Decisions Anne C. Steinemann

Marginal Revenue and Average Revenue for a

Monopoly

• Figure 8-3

Page 111: Microeconomics for Public Decisions Anne C. Steinemann

Monopoly Price and Output

Determination

• Figure 8-4

Page 112: Microeconomics for Public Decisions Anne C. Steinemann

Monopoly Profits

• Figure 8-5

Page 113: Microeconomics for Public Decisions Anne C. Steinemann

Monopoly Price Regulation

• Figure 8-6

Page 114: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Marginal Cost Under Perfect Competition

and Monopoly

• Figure 8-7

Page 115: Microeconomics for Public Decisions Anne C. Steinemann

Negative Externalities: Social Costs Greater Than Private Production Costs

• Figure 9-1

Page 116: Microeconomics for Public Decisions Anne C. Steinemann

Negative Externalities: Social Costs Greater Than Private Consumption Costs

• Figure 9-2

Page 117: Microeconomics for Public Decisions Anne C. Steinemann

Negative Externalities: Social Costs Greater Than Private Production Benefits

• Figure 9-3

Page 118: Microeconomics for Public Decisions Anne C. Steinemann

Negative Externalities: Social Costs Greater Than

Private Consumption Benefits

• Figure 9-4

Page 119: Microeconomics for Public Decisions Anne C. Steinemann

Bargain Between Two Parties

• Figure 9-5

Page 120: Microeconomics for Public Decisions Anne C. Steinemann

The Efficient Solution: Marginal Benefits Equal

Marginal Costs of Positive Externality

• Figure 9-6

Page 121: Microeconomics for Public Decisions Anne C. Steinemann

The Efficient Solution: Marginal Benefits Equal

Marginal Costs of Negative Externality

• Figure 9-7

Page 122: Microeconomics for Public Decisions Anne C. Steinemann

Results of CV Experiment for the Indianapolis

Crooked Creek Greenway

Property Property OwnersOwners

RenterRenterss

County County ResidentResident

ss

Respondents - Survey 47% 8% 26%

Respondents - Solicitation 39% 7% 17%

Prior CCG Awareness 18% 11% 9%

Willing to Contribute Survey 51% 35% 22%

Willing to Contribute Solicitation

36% 14% 11%

Mean WTP — Survey $47.20 $10.71 $29.07

Mean WTP — Solicitation $32.24 $13.33 $34.50

Page 123: Microeconomics for Public Decisions Anne C. Steinemann

Monthly Cost of Pollution ReductionQuantity Quantity Removed Removed

(tons)(tons)

Knotty PineKnotty Pine Wall BoardWall Board

Total CostTotal Cost Marginal Marginal CostCost Total CostTotal Cost Marginal Marginal

CostCost

1 $200 $200 $500 $500

2 600 400 1,000 500

3 1,200 600 3,500 2,500

4 2,000 800 7,000 3,500

5 3,000 1,000 12,000 5,000

6 5,000 2,000 20,000 8,000

7 8,000 3,000

8 12,000 4,000

9 20,000 8,000

10 36,000 16,000

Page 124: Microeconomics for Public Decisions Anne C. Steinemann

Marginal Costs of Pollution ReductionReduction Reduction

(tons/month)(tons/month) Knotty PineKnotty Pine Wall BoardWall Board TotalTotal

1 $200 $500 $200 (KP)

2 400 500 400 (KP)

3 600 2,500 500 (WB)

4 800 3,500 500 (WB)

5 1,000 5,000 600 (KP)

6 2,000 8,000 800 (KP)

7 3,000 1,000 (KP)

8 4,000 2,000 (KP)

10 16,000 3,000 (KP)

15 8,000 (WB)

Page 125: Microeconomics for Public Decisions Anne C. Steinemann

Tax to Correct for Negative Externality

• Figure 9-8

Page 126: Microeconomics for Public Decisions Anne C. Steinemann

Subsidy to Correct for Positive Externality

• Figure 9-9

Page 127: Microeconomics for Public Decisions Anne C. Steinemann

Marketable Pollution Permits

• Figure 9-10

Page 128: Microeconomics for Public Decisions Anne C. Steinemann

Classification of Goods

• Figure 10-1

Page 129: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Two ConsumersPricePrice Consumer AConsumer A Consumer BConsumer B

$10 0 0

9 1 2

8 2 4

7 3 6

6 4 8

5 5 10

4 6 12

3 7 14

2 8 16

1 9 18

0 10 20

Page 130: Microeconomics for Public Decisions Anne C. Steinemann

Consumer Demand

• Figure 10-2

Page 131: Microeconomics for Public Decisions Anne C. Steinemann

Market Demand: Private Production

PricPricee

Consumer Consumer AA

Consumer Consumer BB

Market Market DemandDemand

$10 0 0 0

9 1 2 3

8 2 4 6

7 3 6 9

6 4 8 12

5 5 10 15

4 6 12 18

3 7 14 21

2 8 16 24

1 9 18 27

0 10 20 30

Page 132: Microeconomics for Public Decisions Anne C. Steinemann

Determining Market Demand: Private

Production

• Figure 10-3

Page 133: Microeconomics for Public Decisions Anne C. Steinemann

Aggregate Demand:Public Production

QuantiQuantityty

Consumer Consumer AA

Consumer Consumer BB

Total Social Total Social BenefitsBenefits

1 $9.00 $9.50 $18.50

3 7.00 8.50 15.50

5 5.00 7.50 12.50

7 3.00 6.50 9.50

9 1.00 5.50 6.50

10 0.00 5.00 5.00

12 4.00 4.00

14 3.00 3.00

16 2.00 2.00

18 1.00 1.00

20 0 0

Page 134: Microeconomics for Public Decisions Anne C. Steinemann

Determining Aggregate Demand: Private

Production

• Figure 10-4

Page 135: Microeconomics for Public Decisions Anne C. Steinemann

Combining Demand Curves for a Private

Good

• Figure 10-5

Page 136: Microeconomics for Public Decisions Anne C. Steinemann

Combining Demand Curves for a Public

Good

• Figure 10-6

Page 137: Microeconomics for Public Decisions Anne C. Steinemann

Majority Voting InefficienciesInefficient No Inefficient No VoteVote JohnJohn ClaireClaire CatherinCatherin

eeSumSum

Benefits $650 $350 $300$1,30

0

Costs 400 400 400 1,200

Vote yes no no noInefficient Yes Inefficient Yes VoteVote JohnJohn ClaireClaire CatherinCatherin

eeSumSum

Benefits $450 $450 $0 $900

Costs 400 400 400 1,200

Vote yes yes no yes

Page 138: Microeconomics for Public Decisions Anne C. Steinemann

Voting ParadoxJohnJohn ClaireClaire CatherineCatherine

Path 1st choice 3rd choice 2nd choice

Park 2nd choice 1st choice 3rd choice

Pool 3rd choice 2nd choice 1st choice

Majority Voting Majority Voting OutcomesOutcomes

Path vs. Park Path winsPark vs. Pool Park winsPath vs. Pool Pool wins

Page 139: Microeconomics for Public Decisions Anne C. Steinemann

Demand for a Public Good with a Marginal

Cost of Zero

• Figure 10-7

Page 140: Microeconomics for Public Decisions Anne C. Steinemann

Demand and Costs for a Utility Company

• Figure 10-8

Page 141: Microeconomics for Public Decisions Anne C. Steinemann

Demand and Costs for Two Publicly Provides Goods

with Different Demand Curves

• Figure 10-9

Page 142: Microeconomics for Public Decisions Anne C. Steinemann

Pricing Options for a Publicly Provided

Good

• Figure 10-10

Page 143: Microeconomics for Public Decisions Anne C. Steinemann

Demand and Costs for a Public Facility with Variable Demand

• Figure 10-11

Page 144: Microeconomics for Public Decisions Anne C. Steinemann

Market for Low-Quality Cars

• Figure 11-1

Page 145: Microeconomics for Public Decisions Anne C. Steinemann

Market for High-Quality Cars

• Figure 11-2

Page 146: Microeconomics for Public Decisions Anne C. Steinemann

Utility of Income

• Figure 11-3

Page 147: Microeconomics for Public Decisions Anne C. Steinemann

Utility Function for Risk-Averse Individuals

• Figure 11-4

Page 148: Microeconomics for Public Decisions Anne C. Steinemann

Utility Function for Risk-Prone Individuals

• Figure 11-5

Page 149: Microeconomics for Public Decisions Anne C. Steinemann

Utility Function for Risk-Neutral Individuals

• Figure 11-6

Page 150: Microeconomics for Public Decisions Anne C. Steinemann

Decision Tree for Calculating Expected

GPA

• Figure 11-7

Page 151: Microeconomics for Public Decisions Anne C. Steinemann

Decision Tree for Water Management

Decision

• Figure 11-8

Page 152: Microeconomics for Public Decisions Anne C. Steinemann

Utility Curve for Money: $0 to $100

• Figure 11-9

Page 153: Microeconomics for Public Decisions Anne C. Steinemann

Value of Perfect Information for Water Management Decision

• Figure 11-10

Page 154: Microeconomics for Public Decisions Anne C. Steinemann

Value of Imperfect Information for Water Management Decision

• Figure 11-11

Page 155: Microeconomics for Public Decisions Anne C. Steinemann

Cash Flow Diagram and Time Positions

• Figure 12-1

Page 156: Microeconomics for Public Decisions Anne C. Steinemann

Positive and Negative Cash

Flows

• Figure 12-2

Page 157: Microeconomics for Public Decisions Anne C. Steinemann

Relationships Between Present, Future and Annual

Values

• Figure 12-3

Page 158: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (a) Deposit $1,000 into bank account

Page 159: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (b) Present value

Page 160: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (c) Deposit at beginning of year

Page 161: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (d) Present value of future withdrawal

Page 162: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (e) Present value of annual payment

Page 163: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (f) Present value at end of 10 years

Page 164: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (g) Annual payments to pay bond issue

Page 165: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (h) Annual payments over 20 years

Page 166: Microeconomics for Public Decisions Anne C. Steinemann

Example: Savings and Withdrawals

• (i) Present value of four years tuition

Page 167: Microeconomics for Public Decisions Anne C. Steinemann

Examples of Private Sector and Public Sector Cost-

Benefit Analyses

• Figure 13-1

Page 168: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Alternatives by

Different Methods of CBAProject A Purchase Project A Purchase

Park Maintenance Park Maintenance EquipmentEquipment

Project B Purchase Project B Purchase Street Repair Street Repair EquipmentEquipment

Initial Investment Savings

-$8,000 -$8,000

Year 1 $1,000 $6,000

Year 2 2,000 2,000

Year 3 2,000 2,000

Year 4 7,000 1,000

NPV (5%) $2,253 $2,079

NPV (10%) $846 $1,293

B/C ration (5%) 1.28 1.26

B/C ration (10%) 1.11 1.16

Internal rate of return

13.6% 20.3%

Incremental ROR 5% 10%

Payback period 4 years 2 years

Page 169: Microeconomics for Public Decisions Anne C. Steinemann

Net Present Value Method

• Page 335 NPV =Bt

1+ r( )t

t=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥−

Ct

1+ r( )t

t=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥

Page 170: Microeconomics for Public Decisions Anne C. Steinemann

Benefit-Cost Ratio

• Page 336 B /C =

Bt

1+ r( )t

t=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥

Ct

1+ r( )t

t=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥

Page 171: Microeconomics for Public Decisions Anne C. Steinemann

Internal Rate of Return

• Page 338Bt1+ r( )

tt=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥=

Ct

1+ r( )t

t=0

n

∑⎡

⎣⎢⎢

⎦⎥⎥

Page 172: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Alternatives by Incremental Rate of

Return AnalysisProject Project

AAProject Project

BBProject Project

CCInitial investment

-$8,000 -$8,000 -$10,000

Year 1 1,000 6,000 5,000Year 2 2,000 2,000 3,000Year 3 2,000 2,000 2,000Year 4 7,000 1,000 4,000Rate of return 13.6% 20.3% 16.2%

Page 173: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Alternatives by Incremental Rate of

Return Analysis

First PairwiseFirst PairwiseProject A Project A (challeng(challeng

er)er)

Project B Project B (defende(defende

r)r)

IncrementIncremental Cash al Cash

FlowFlowInitial investment

-$8,000 -$8,000 $0

Year 1 1,000 6,000 -5,000Year 2 2,000 2,000 0Year 3 2,000 2,000 0Year 4 7,000 1,000 6,000Rate of return 13.6% 20.3% 6.3%

Page 174: Microeconomics for Public Decisions Anne C. Steinemann

Comparison of Alternatives by Incremental Rate of

Return AnalysisSecond Second PairwisePairwise

Project C Project C (challenge(challenge

r)r)

Project B Project B (defende(defende

r)r)

IncrementIncremental Cash al Cash

FlowFlowInitial investment

-$10,000 -$8,000 -$2,000

Year 1 5,000 6,000 -1,000Year 2 3,000 2,000 1,000Year 3 2,000 2,000 0Year 4 4,000 1,000 3,000Rate of return 16.2% 20.3% 9.6%

Page 175: Microeconomics for Public Decisions Anne C. Steinemann

Distribution of Benefits and Costs:

Positive Net BenefitsSusaSusa

nnLaurLaur

aaDebrDebr

aaJohnJohn

Benefits $10 $100 $10 $10

Costs -$20 -$20 -$20 -$20

Benefits - Costs -$10 $80 -$10 -$10

Net Benefits = -10 + 80 -10 -10 = $50

Page 176: Microeconomics for Public Decisions Anne C. Steinemann

Distribution of Benefits and Costs: Negative

Net BenefitsSusaSusa

nnLaurLaur

aaDebrDebr

aaJohnJohn

Benefits $20 $20 $20 $20

Costs -$10 -$60 -$10 -$10

Benefits - Costs $10 -$40 $10 $10

Net Benefits = -40 + 10 + 10 + 10 = -$10

Page 177: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Bridge Crossings

• Figure 14-1

Page 178: Microeconomics for Public Decisions Anne C. Steinemann

Effects of Sultan Island Bridge

CostsCosts

Previous ferry riders $25,000

New travelers $25,000

Ferry owner -$5,000

Taxpayers -$40,000

Unadjusted net dollar impact $5,000

Page 179: Microeconomics for Public Decisions Anne C. Steinemann

Effects of Sultan Island Bridge ($0.25

toll)CostsCosts

Previous ferry riders $12,500

New travelers $6,250

Ferry owner -$5,000

Taxpayers -$15,000

Unadjusted net dollar impact -$1,250

Page 180: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Bridge Crossings (fare of

$0.25)

• Figure 14-2

Page 181: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Ferry Crossings

• Figure 14-3

Page 182: Microeconomics for Public Decisions Anne C. Steinemann

Parkview Recreational Facility

Annual CostsCosts/yearCosts/year

Construction and land acquisition costs

$50,000

Forgone tax revenue 10,500

Annual operating expenses 14,000

$74,500

Page 183: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Parkview

Recreational FacilityAdmission FeeAdmission Fee Annual Number of Annual Number of

UsersUsers$1.20 0

1.10 10,000

1.00 20,000

0.90 30,000

0.80 40,000

0.70 50,000

0.60 60,000

0.50 70,000

0.40 80,000

0.30 90,000

0.20 100,000

0.10 110,000

0 120,000

Page 184: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Parkview

Recreational Facility

• Figure 14-4

Page 185: Microeconomics for Public Decisions Anne C. Steinemann

Low-Income and Total Demand for Recreational

Facilities

• Figure 14-5

Page 186: Microeconomics for Public Decisions Anne C. Steinemann

Price Floor and Price Ceiling

• Figure Q3-1

Page 187: Microeconomics for Public Decisions Anne C. Steinemann

Consumers vs. Producers Bear Full

Amount of Tax

• Figure Q3-2

Page 188: Microeconomics for Public Decisions Anne C. Steinemann

Change in Consumer Surplus

• Figure Q4-1

Page 189: Microeconomics for Public Decisions Anne C. Steinemann

Effect of a Tariff on Social Surplus

• Figure Q7-1

Page 190: Microeconomics for Public Decisions Anne C. Steinemann

Demand for Parking Spaces

• Figure Q13-1