The chamber of commerce in a beach resort town wants to estimate the proportion of visitors who are repeat visitors. Suppose that they have estimated that they need a sample size of n=16,577 people to achieve a margin of error of ± .01 percentage points with 99 percent confidence, but this is too large a sample size to be practical. How can they reduce the sample size?
A) Use a higher level of confidence
B) Use a smaller margin or error
C) Use a lower level of confidence
D) Conduct a census

Question

Quizplus · Accepted Answer

Using a lower level of confidence reduces the width of the confidence interval, which allows for a smaller sample size to achieve the desired margin of error.

The Chamber of Commerce in a Beach Resort Town Wants