Question: Question 4 (5 points) Four samples of 4 observations each have been taken of 80kg concrete slabs produced by a machine, and the results are

Question 4 (5 points) Four samples of 4

Question 4 (5 points) Four samples of 4 observations each have been taken of 80kg concrete slabs produced by a machine, and the results are displayed below. a. Using factors from table 10-3, determine the upper and lower control limits for the average sample mean and the average range. Mean Range 1 89.5 3.6 2 90.14 3.3 3 90.10 2.4 4 99.60 2.7

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