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Maths Probability Problem - In Fairfax County, 6% of drivers are under 21

Question # 00011877
Subject: Mathematics
Due on: 05/21/2014
Posted On: 04/09/2014 03:17 PM

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In Fairfax County, 6% of drivers are under 21. Last year 20 % of the drivers who are under 21 had an accident. On the other hand, only 5 % of the drivers who are 21 or older had an accident last year. A driver is chosen at random from Fairfax County. Draw a tree with the probabilities labeled on the branches to illustrate this experiment.

a. Find the probability that the chosen driver had an accident last year.

b. Given that the driver had an accident last year, find the probability that he is under 21.

c. Given that the driver did not have an accident last year, find the conditional probability that he is 21 or older.


Tags county drivers fairfax problem probability maths accident year driver drivers probability chosen fairfax given older county illustrate experiment branches conditional random hand draw tree probabilities labeled

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Maths Probability Problem - In Fairfax County, 6% of drivers are under 21

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Maths_Probability_Problem_Solution_-_Fairfax_County.docx (226.32 KB)
Preview: an xxxxxxxx last xxxxx find the xxxxxxxxxxxxxxxxxxxxxx that he xx 21 xx xxxxx The xxxxxxxxxxx that a xxxxxx who did xxx have xx xxxxxxxx is xx or over xx equal to xxx quotient xx xxx probability xxxx a driver xxx 21 or xxxx and xxx xxx have xx accident, and xxx probability that x driver xxx xxx have xx accident .....
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