Question: Every hour a quality control inspector measures the outside diameter of five parts. If the average of the means is 3 and the average range

Every hour a quality control inspector measures
Every hour a quality control inspector measures the outside diameter of five parts. If the average of the means is 3 and the average range is 4, what is the upper control limit for the R- chart for this process? Select one: a. 9.12 b. 8.44 c.-5.92 d. O

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