If the 1,017 People in the Previous Question Had Called

Multiple Choice

If the 1,017 people in the previous question had called a 900 number to give their opinions, how would this have affected the response?

A) Not at all, because the width of the confidence interval depends only on the sample size, and not on the population size.
B) Not at all, because the width of the confidence interval depends only on the sample size, and not on how the sample was obtained.
C) It would be wider because voluntary response polls have a bigger margin of error than simple random samples.
D) It would be narrower because voluntary response polls are less variable than simple random samples.
E) A confidence interval makes no sense for a voluntary response sample.