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2. Computer upgrades have a nominal time of 45 minutes. Samples of 5 observations each have been taken, and the results are as listed. Determine upper and lower control limits for mean and range charts, and decide if the process is in control. 1 45.8 43.3 45.1 45.2 44.9 2 44.8 44.8 43.1 45.3 45.4 3 44.7 44.1 43.9 43.2 43.5 4 45.9 45.8 40.2 43.1 44.5 5 43.8 44.9 45.1 45.6 44.4 6 45.8 43.3 45.1 43.8 44.9