You need to estimate the mean number of travel days per year for salespeople. The mean of
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You need to estimate the mean number of travel days per year for salespeople. The mean of a small pilot study was 150 days, with a standard deviation of 14 days. If you must estimate the population mean within 2 days, how many salespeople should you sample? Use the 90% confidence level.
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Related Book For 
Statistical Techniques in Business and Economics
ISBN: 978-1259666360
17th edition
Authors: Douglas A. Lind, William G Marchal
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