probability: the chance that a particular event will occur. when do people use probability ◦...
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Probability: the chance that a particular event will occur.
When do people use probability◦ Investing in stocks◦ Gambling◦ Weather
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What is the probability that tomorrow will be Thursday?
What is the probability that tomorrow will be Monday?
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What is the probability that it will rain tomorrow?
What is the probability that you will find $5 today?
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0Will Not Happen
1Will Happen
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What is the probability that you will get tails when you flip a coin?
Experiment: Flip a coin 100 times. How many heads do you predict you will
get? How many tails do you predict you will get?
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Using what we learned from the coin flip experiment:
What is the probability that you will roll a 3 using a six-sided die?
What is the probability that you will roll a 6
What is the probability that you will get a 3 or a 6?
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What is the probability that you draw a 9 of hearts from the deck?
What is the probability that you draw a jack from the deck?
You draw a jack from the deck of cards. You leave the jack out of the deck, what is the probability that you will draw a jack the second time?
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Color Fraction
Decimal Percent
Blue 13/55 .23 23%Green 13/55 .23 23%Brown 6/55 .10 10%Yellow 10/55 .18 18%Orange 9/55 .16 16%Red 4/55 .07 7%