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A researcher wants to estimate the mean number of hours a college accounting graduate spends studying for the CPA exam. The researcher wants to be

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A researcher wants to estimate the mean number of hours a college accounting graduate spends studying for the CPA exam. The researcher wants to be within 1.75 hours of the actual number. If she wants to be 99% confident of the results, how large a sample size is required? Assume the standard deviation for the number of hours a college accounting graduate spends studying for the CPA exam is 11.62 hours

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