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A researcher wants to estimate the mean age of all Business Week readers at a...

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A researcher wants to estimate the mean age of all Business Week readers at a 99% confidence level. She wants the margin of error tobe within 3.1 years of the population mean. The standard deviation of ages of all Business Week readers is 10.04 years. The sample sizethat will yield a margin of error within 3.1 of the population mean is:

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