Question

A razorblade manufacturer wants to test responses to a new blade for heavy beards. What is the best sample for an experiment?

A.a random sample from all people of all ages
B.a random sample of men with beards
D.a random sample of all people who shave
C.a random sample of men who shave and have a heavy beard

Answer 1

c (also you got c and d mixed up

Answer 2

Option C - a random sample of men who shave and have a heavy beard

Explanation:

Any sample must be a true representative of the sample. The razorblade manufacturer wants to test responses to a new blade for heavy beards. Hence, the sample must include both the attributes. The best sample for the experiment would be a random sample of men who shave and have a heavy beard.

Hope it helps.

Thank you !!