Question: Note: Please provide detailed steps (intermediate formula and final result) for each answer. Late homework will receive NO credits. If you have any difficulties, please

Note: Please provide detailed steps (intermediate

Note: Please provide detailed steps (intermediate formula and final result) for each answer. Late homework will receive NO credits. If you have any difficulties, please make an appointment with me. Question 1: 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 the following table, determine upper and lower control limits for the mean and range charts, and decide if the process is in control. Sample 2 3 4 5 6 79.2 80.5 79.6 78.9 80.5 79.7 78.8 78.7 79.6 79.4 79.6 80.6 80.0 81.0 80.4 79.7 80.4 80.5 78.4 80.4 80.3 79.4 80.8 80.0 81.0 80.1 80.8 80.6 78.8 81.1 Question II: In Question I, if the goal is to get the upgrade time down to 80 minutes or less, Calculate the three-sigma control limit of proportion () control chart. (Suppose the manager deems an upgrade time greater than 80 minutes to be a "defective.")

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