America's young people are serious Internet users; 87% of Americans ages 12 to 17 are Internet users (or The Cincinnati Enquirer, February 7, 2006). MySpace was voted the most popular Web site by 9% in the sample survey of Internet users in this age group. Assume 1,250 youths participated in the survey. Determine the margin of error (to 3 decimals), and Compute the interval estimate (to 3 decimals) of the population proportion for which MySpace is the most popular Web site? Employ a 95% confidence level.
Margin of error =
Interval estimate =