Question: Random samples of size n 400 are taken from a population

Random samples of size n=400 are taken from a population with p= 0.10.
a. Construct the centerline and the upper and lower control limits for the p chart.
b. Suppose six samples of size 400 produced the following sample proportions: 0.06, 0.11, 0.09, 0.08, 0.14, and 0.16.
Plot these values on the p chart.
c. Is the production process under control? Explain.

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