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f) (5 pts) What is the minimum number of randomly selected people Clark should include in his focus group if he wants to be sure

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f) (5 pts) What is the minimum number of randomly selected people Clark should include in his focus group if he wants to be sure that he will be able to calculate a 95% confidence interval no larger than \"plus or minus 0.05" for the true proportion of people who prefer Clark's pizza

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