CR10.6 The article “Should Canada Allow Direct-to-

Consumer Advertising of Prescription Drugs?” (Canadian Family Physician [2009]: 130–131) calls for the legalization of advertising of prescription drugs in Canada.

Suppose you wanted to conduct a survey to estimate the proportion of Canadians who would support allowing this type of advertising. How large a random sample would be required to estimate this proportion to within

.02 with 95% confidence?