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Author Question: On a recent holiday evening, a sample of 500 drivers was stopped by the police. Three hundred were ... (Read 58 times)

mimie

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on: Mar 25, 2023

On a recent holiday evening, a sample of 500 drivers was stopped by the police. Three hundred were under 30 years of age. A total of 250 were under the influence of alcohol. Of the drivers under 30 years of age, 200 were under the influence of alcohol.

Let A be the event that a driver is under the influence of alcohol.
Let Y be the event that a driver is less than 30 years old.

a.Determine P(A) and P(Y).
b.What is the probability that a driver is under 30 and not under the influence of alcohol?
c.Given that a driver is not under 30, what is the probability that he/she is under the influence of alcohol?
d.What is the probability that a driver is under the influence of alcohol, when we know the driver is under 30?
e.Show the joint probability table.
f.Are A and Y mutually exclusive events? Explain.
g.Are A and Y independent events? Explain.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by mimie on Mar 25, 2023

bleep bloop

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Reply #1 on: Mar 25, 2023
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mimie

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Reply 2 on: Mar 25, 2023
Great answer, keep it coming :)

jojobee318

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Reply 3 on: Yesterday
Wow, this really help

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