The article “Should Canada Allow Direct-to- Consumer Advertising of Prescription Drugs?” (Canadian Family Physician : 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?
Answer to relevant QuestionsThe National Association of Colleges and Employers carries out a student survey each year. A summary of data from the 2009 survey included the following information: • 26% of students graduating in 2009 intended to go on ...The paper “MRI Evaluation of the Contralateral Breast in Women with Recently Diagnosed Breast Cancer” (New England Journal of Medicine : 1295–1303) describes a study of the use of MRI (Magnetic Resonance Imaging) ...For the following pairs, indicate which do not comply with the rules for setting up hypotheses, and explain why: Assuming a random sample from a large population, for which of the following null hypotheses and sample sizes n is the large-sample z test appropriate: a. H0: p = .2, n = 25 b. H0: p = .6, n = 210 c. H0: p = .9, n = 100 d. ...The article “Irritated by Spam? Get Ready for Spit” (USA Today, November 10, 2004) predicts that “spit,” spam that is delivered via Internet phone lines and cell phones, will be a growing problem as more people turn ...
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