Question: HCH ' s assembly unit has decided to use a p - Chart with 2 - sigma control limits to monitor the proportion of defective

HCH's assembly unit has decided to use a p-Chart with 2-sigma control limits to monitor the proportion of defective copper wires produced by their production process. The quality control manager randomly samples 100
copper wires at 16
successively selected time periods and counts the number of defective copper wires in the sampe.What value of z should be used to construct the control chart?

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