Question

A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts the first 10 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 is offered to participants.
It is a valid sample because the first 10 people were selected to participate.
It is not a valid sample because it is not a random sample of the population.

Answer 1

im confused on this question

Answer 2

first off, do you think the study's valid or invalid?

Answer 3

valid

Answer 4

not sure

Answer 5

I would have invalid both because of the sample size (10 people) and it's not random (it's only accepts newspaper readers, not the total population.

Answer 6

Is this a question where you can only choose 1?

Answer 7

yes

Answer 8

I'd go with the not random one then. 10 people could possibly be a sizable percentage of the population

Answer 9

ok thank you