The data in file XR20061 represent 30 samples, each with n = 3 items measured in inches.

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The data in file XR20061 represent 30 samples, each with n = 3 items measured in inches. For the associated mean and range charts, have your statistical software apply all of the diagnostic tests of which it is capable. Has applying these diagnostics to the mean and range charts raised any concerns regarding the state of control of the process? If so, in what way(s)?
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