Question: The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0160 .

The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0160 . The means of 39 sambles of n=28 are Click here for the Excel Dote File a-1. Construct an x-chatt for this process with three-slgma limits. (Do not round intermediote calculations. Round your answers to 2 . decimel pleces.) a-2. Is the process in control? Yes No b. Analyze the data using a median run test and an up/down run test. What can you conclude

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