Mathematics, 27.05.2021 14:00 mitch80

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

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

c It is a valid sample because the first 10 people were selected to participate.

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

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