Over the past 5 years, the mean time for a warehouse to fill a buyer's order has
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Over the past 5 years, the mean time for a warehouse to fill a buyer's order has been 25 minutes. Officials of the company believe that the length of time has increased recently, either due to a change in the workforce or due to a change in customer purchasing policies. The processing times (in minutes) were recorded for a random sample of 15 orders processed over the past month.
Do the data present sufficient evidence to indicate that the mean time to fill an order has increased?
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Related Book For
An Introduction To Statistical Methods And Data Analysis
ISBN: 9781305465527
7th Edition
Authors: R. Lyman Ott, Micheal T. Longnecker
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