Estimate the population mean

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Reference no: EM1397404

You need to estimate the mean number of travel days per year for outside salespeople. The mean of a small pilot study was 150 days, with a standard deviation of 42 days.

If you must estimate the population mean within 10 days, how many outside salespeople should you sample? Use the 90 percent confidence level.

Reference no: EM1397404

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