Question: 3. The sample grand mean (based on 45 samples of seven observations each) for the weight of a can of beans is 250 grams with

3. The sample grand mean (based on 45 samples of seven observations each) for the weight of a can of beans is 250 grams with an average range of 8 grams.

Find the upper and lower control limits for the x - and R -charts.

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