What kind of survey (mail. telephone. interview. web. direct observation] would you recommend for each of the following purposes, and why? What problems might been countered?
a. To estimate the proportion of students at your university who would prefer a web-based statistics class to a regular lecture.
b. To estimate the proportion of students at your university who cart)' backpacks to class.
c. To estimate the proportion of students at your university who would be interested in two-month summer class in international business with tours of European factories.
d. To estimate the proportion of U.S. business graduates who have taken a class in international business.
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