Decision Lint (July 2001) study designed to compare the response rates of electronic surveys and traditional print surveys, Exercise 8.54. Recall that the two surveys were developed for customers who had purchased products over the Internet from a leading retailer of office supplies. How many customers should be sampled to estimate the difference between the response rates of the two survey types to within .01 using a 90% confidence interval? Assume the same number of customers should be sampled for each survey.