At a party there are 30 students over age 21 and 20 students under age 21. You c

Question

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 that chance?
%

Why is your sample not an SRS?

This is not an SRS because asking students at a party about alcohol is inherently flawed.

This is not an SRS because interviews do not represent a true experimental design; interview responses are subjective and biased.    

This is not an SRS because not every group of 5 students can be chosen; the only possible samples are those with 3 older and 2 younger students.

This is not an SRS because the sample size is too small; the selected students cannot represent the whole population. This is not an SRS because the chance of being selected from each group is the same.

Explanation / Answer

FOR OVER AGE 21

THE SAME CHANGE TO BE INTERVIEWED WAS 1/30

FOR UNDER AGE 21

THE SAME CHANGE TO BE INTERVIEWED WAS 1/20

Why is your sample not an SRS?

This is not an SRS because interviews do not represent a true experimental design; interview responses are subjective and biased.    

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.