Question: A process is monitored for defective items by taking a sample of 300 items each day and calculating the proportion that are defective. Let pi

A process is monitored for defective items by taking a sample of 300 items each day and calculating the proportion that are defective. Let pi be the proportion of defective items in the ith sample. For the last 40 samples, the sum of the proportions is ∑40 i=1 pi = 1.42.

Calculate the center line and the 3???? upper and lower control limits for a p chart.

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