Question

HELP ME ASAP PLS :)
A researcher places a radio advertisement offering $32 in exchange for participation in a short study. The researcher accepts the first nine people who respond
to the advertisement. Which of the following statements is true about the sample?

A. It is a valid sample because the first nine people were selected to participate.
B. It is not a valid sample because it is not a random sample of the population
C. It is a valid sample because money was offered to participants
D. It is not a valid sample because it is only a short study

Answer 1

Answer:

A or D

Step-by-step explanation:

I would think that it would be a valid sample because the first nine people were selected to participate.  But, it also could not be a valid sample because it is only a short study.  If there are more than one answer, I would say those two, but if it is only one answer, it is either A or D.  I think....