A survey of 40 students at a local college asks, "Where do you buy the majority of your books?" The responses fell into three categories: "at the campus bookstore," "on the Internet," and "other." The results follow. Estimate the proportion of the college students who buy their books at the campus bookstore. Where Most Books Bought bookstore bookstore Internet other Internet other bookstore other bookstore bookstore bookstore bookstore bookstore other bookstore bookstore bookstore Internet Internet other other other other other other other Internet bookstore other other Internet other bookstore bookstore other bookstore Internet Internet other bookstore At 98% confidence level, find the margin of error for the proportion of the college students who buy their books from the bookstore? (4 decimal places)
