Question: A quality analyst wants to examine a packaging process that has an overall average weight of 825 lb. The average range is 18 lb. If

A quality analyst wants to examine a packaging process that has an overall average weight of 825 lb. The average range is 18 lb. If she use a sample size of 12, calculate UCL for the R chart with 3 limit (i.e., with confidence level 99.73%).

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