Question

A researcher posts a newspaper advertisement offering $20 in exchange for participation in a short study. The researcher accepts the first five people who respond to the advertisement. Which of the following statements is true about the sample?

It is not a valid sample because it is only a short study.

It is a valid sample because money was offered to participants.

It is a valid sample because the first five people were selected to participate.

It is not a valid sample because it is not a random sample of the population.

Answer 1

It's D). It is not a valid sample because it is not a random sample of the population.

Explanation:

I took the test and got it right.

Answer 2

The answer is "It is not a valid sample because it is not a random sample of the population".

Explanation:

I had this test and that was my answer, and it was correct.