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the mean number of days per year for salespeople. The mean of a small pilot study was 150 days, with a andard deviation of 44

the mean number of days per year for salespeople. The mean of a small pilot study was 150 days, with a andard deviation of 44 days if you want estimate the population mean within 8 days, how many salespeople should you sample? Use the 90% confidence level (Round up your answer to the next whole number .) of

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