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A sample of size n = 56 has sample mean x =57.2 and sample standard deviation s = 9.1. Part: 0 / 2 Part 1

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A sample of size n = 56 has sample mean x =57.2 and sample standard deviation s = 9.1. Part: 0 / 2 Part 1 of 2 Construct a 99.5% confidence interval for the population mean u. Round the answers to one decimal place. A 99.5% confidence interval for the population mean u is

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