In 1995,13,000 Internet users were surveyed and asked about their willingness to pay fees for access to websites.Of these,2,938 were definitely not willing to pay such fees.How large a sample is necessary to estimate the proportion of interest to within 2 percent in a 95 percent confidence interval?
A)18
B)307
C)1680
D)2000
E)2965

Question

Quizplus · Accepted Answer

To estimate the proportion of interest to within 2 percent in a 95 percent confidence interval, the sample size needed is 1680.

In 1995,13,000 Internet Users Were Surveyed and Asked About Their