Question: Frank'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

Frank'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 operations manager randomly samples 100 copper wires at 16 successively selected time periods and counts the number of defective copper wires in the sample.

What is the Z value and the Upper & lower Control Limit? Round answer to three decimal places.

Sample Defects

210

512

914

1011

1111

128

1310

148

1512

1613

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