Question: 1. (25 marks) a. The data from 8 samples with four pieces in each sample in a drilling process showed that the parts had an

1. (25 marks) a. The data from 8 samples with

1. (25 marks) a. The data from 8 samples with four pieces in each sample in a drilling process showed that the parts had an average diameter of 4.32cm, and an average range of .06cm. Calculate the control limits for the mean and range charts

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