Question: Find formulas for the UCL, CL, and LCL (corresponding to 3-limits) in the case of a control chart for the number of defectives, assuming that,

Find formulas for the UCL, CL, and LCL (corresponding to 3σ-limits) in the case of a control chart for the number of defectives, assuming that, in a state of statistical control, the fraction of defectives is p.

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