P-chart (10 points). A professor records the number of students who complain each week throughout the semester ...

      P-chart (10 points). A professor records the number of students   who complain each week throughout the semester. This data is displayed in the   table below. The number of complaints is out of a class size of forty   students.   a. Compute   the proportion of students who complain on a weekly basis and then design a   p-chart. (Calculate the three-sigma control limits for the p-chart.)   b. Plot the   control limits and the proportion of complaints for the 15 samples. Based on   your p-chart and the data collected, what can you conclude about the process?   Explain.       Week number  Complaints    1 5   2 2   3 7   4 1   5 3   6 2   7 8   8 1   9 3   10 5   11 4   12 6   13 3   14 1   15 4