Question: A control chart for individual observations has 3-sigma control limits UCL = 1.80 and LCL = 1.62. The process specification limits are (1.64, 1.84). (a)

A control chart for individual observations has 3-sigma control limits UCL = 1.80 and LCL = 1.62. The process specification limits are (1.64, 1.84).

(a) Estimate the process standard deviation.

(b) Calculate PCR and PCRk for the process.

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