Question: Control charts for x and R are maintained for an important quality characteristic. The sample size is n = 7; and R are computed for

Control charts for x and R are maintained for an

Control charts for x and R are maintained for an important quality characteristic. The sample size is n = 7; and R are computed for each sample. After 35 samples, we have found that = 7805, , R; = 1200 (a) Set up and x and R charts using these data. (b) Assuming that both charts exhibit control, estimate the process mean and standard deviation. (c) Given the specification limits, USL =240, and LSL = 180, please evaluate the process capability with Cp

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