Question: 1. what is the upper control limit ? 2. what is the centef line ? 3. what is the lower control limit ? 4. sample
A quality inspector took six samples, each with twenty observations, of the weight of a bagging process, in pounds. The sample means and ranges are shown below. Use this information to obtain a three-sigma control chart for the dispersion of the weight. Use that control chart to answer the questions below. Do not round intermediate calculations. Round your final answers to three decimal points
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