Question

a magazine ran a survey about a web site for downloading music. readers could register their responses on the magazine’s web site. identify what is wrong. choose the correct answer below. a. it is likely that the survey used a loaded question, so the results of the survey are not reliable. b. the sample is a census, so there is a good chance that the results do not reflect the population. c. the sample is a voluntary response sample, so there is a good chance that the results do not reflect the population. d. the magazine has an interest in the survey results, so the source of the survey is questionable.

Explanation:

• Option A: There's no info suggesting a loaded question, so A is wrong.
• Option B: A census includes the entire population, but this is a survey (sample), so B is wrong.
• Option C: The survey is voluntary (readers choose to respond), so it's a voluntary response sample. Such samples often have bias as those with strong opinions are more likely to respond, so results may not reflect the population. This is correct.
• Option D: The magazine's interest alone doesn't make the source questionable; the issue is the voluntary sampling, so D is wrong.

Answer:

C. The sample is a voluntary response sample, so there is a good chance that the results do not reflect the population.