Question: 2. The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 146

2. The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 146 . The means of 39 samples of n=14 are shown in the following table. a. Construct an x -chart for this process with three-sigma limits. Is the process in control? b. Analyze the data using a median run test and an up/down run test. What can you conclude? 2. The time needed for checking in at a motel is to be investigated. Historically, the process has had a standard deviation equal to 146 . The means of 39 samples of n=14 are shown in the following table. a. Construct an x -chart for this process with three-sigma limits. Is the process in control? b. Analyze the data using a median run test and an up/down run test. What can you conclude

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