An American Express retail survey found that 16% of U.S. consumers had used the internet to buy gifts during the holiday's season. If 1285 customers participated in the survey , what is the interval...

An American Express retail survey found that 16% of U.S. consumers had used the internet to buy gifts during the holiday's season. If 1285 customers participated in the survey , what is the interval estimate of the population proportion of the customers using the internet to buy gifts ? use 95% confidence .