At a party there are 30 students over age 21 and 20 students under age 21. You choose at random 3 of those over 21 and separately choose at random 2 of those under 21 to interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed: what is the chance? Why is your sample not an SRS?
Added by Cheryl H.
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Step 1: Calculate the probability of choosing 3 students over 21 out of 30 students over 21. Show more…
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At a party there are 30 students over age 21 and 20 students under age 21 . You choose at random 3 of those over 21 and scparately choose at random 2 of those under 21 to interview about attitudes toward alcohol. You have given every student at the party the same chance to be interviewed. Why is your sample not an SRS?
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A recent survey shows that the probability of a college student drinking alcohol is 0.6. Further, given that the student is over 21 years old, the probability of drinking alcohol is 0.8. It is also known that 30% of the college students are over 21 years old. What is the probability of drinking alcohol and being over 21 years old? Group of answer choices 0.36 0.24 0.42 0.66
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