Question: I need help solving this problem The time needed for checking in at a motel is to be investigated. Historically, the process has had a

I need help solving this problem

The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 0.170 . The means of 39 samples of n=14 are Click here for the Excel Data File a-1. Construct an X-chart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) a-1, Construct an x-chart for this process with three-sigma limits. (Do not round intermediate calculations. Round your answers to 2 decimal places.) 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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