Question: The article Should Canada Allow Direct to Consumer Advertising of Prescription

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?

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