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Compute the mean and range of each sample, Control charts

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Mount Blanc Hospital is working on improving waiting time in order to give customers better service in their waiting rooms. Forty samples of size 5 were taken at random times from their main waiting room. These data can be found on the attached worksheet.

1) Compute the mean and range of each sample and plot them on control charts.

b. Does the process appear to be in statistical control? Why or why not?

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The Solution provides control charts for mean and range and also indicates whether the process appear to be in statistical control.

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