Question: Problem 7. Sample size In each case, find the appropriate sample size required to construct a 85% confidence interval for p (population proportion) that has

Problem 7. Sample size In each case, find the appropriate sample size required to construct a 85% confidence interval for p (population proportion) that has a margin of error 0.05. a. Assume that no preliminary estimate for p is available. [3 marks] b. Assume that the preliminary estimate for p is 0.35. [3 marks]

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