Question: Problem # 5 ( 2 pts ) : For a stable process with USL = 4 7 and LSL = 4 3 , control charts

Problem #5(2 pts): For a stable process with USL=47 and LSL=43, control charts for and R are used to monitor the process. After 20 samples of size 5 are analyzed, we found that:
and
We frequently use the equation \sigma =R d_2 to estimate the process standard deviation. In this case, d_2=2.326 when n=5. Calculate and comment on Cp and Cpk of this process.
Based on the following equation, calculate the 95% confidence interval for C_p, i.e.,\alpha =5%

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