Question: 1. An inspector wants to develop 3 sigma level process control charts to monitor the weight of bag of rocks. Data (in pounds) from Monday

1. An inspector wants to develop 3 sigma level

1. An inspector wants to develop 3 sigma level process control charts to monitor the weight of bag of rocks. Data (in pounds) from Monday through Thursday are shown. Three samples (n=3) were taken each day. Calculate the limits by using table provided below. Draw the mean and range charts and discuss the results. Is the process under control

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