(See Solution) Computer upgrades have a nominal time of 80 minutes. Samples of five observations each have been taken, and the results are as listed. Using
Question: Computer upgrades have a nominal time of 80 minutes. Samples of five observations each have been taken, and the results are as listed. Using factors from Table 10.3, determine upper and lower control limits for mean and range charts, and decide if the process is in control.
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