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Unformatted text preview: μ2 is the mean mortgage rate of banks in country B. Do the data provide sufficient evidence (at = 5%) that the mean mortgage rates of the two countries are different? (Final 2000, Q2) The problem is to determine the proportion (p) of women among new digital video camera buyers. A statistician wants to choose a sample size such that the resulting 95% interval estimate for p has a margin of error (error bound) no larger than 0.05. (a) What sample size the statistician should choose? (b) What sample size the statistician should choose if it can be "safely" assumed that among new digital video camera buyers, at least 72.5% are men....
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 Spring '09
 AnthonyChan

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