Question: Determine the pp , S p , UCL and LCL for a p -chart of 95 percent confidence (1.96 standard deviations). Ten samples of 15

Determine the pp , S p , UCL and LCL for a pDetermine the pp , Sp, UCL and LCL for a p-chart of 95 percent confidence (1.96 standard deviations).

Ten samples of 15 parts each were taken from an ongoing process to establish a p-chart for control. The samples and the number of defectives in each are shown in the following table. NUMBER OF DEFECTIVE ITEMS IN THE SAMPLE SAMPLE 1 2 3 4 5 6 7 8 9 10 > NMNMN 3 2 1 2 1 3 2 1 15 15

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