Defect monitoring. The following data are from a production process that makes 250 units each hour. The data were collected over a normal 12-hour shift one day. The data are shown in the table at the right. Using the first 10 hours as the calibration period,
a) Calculate the center line of the p chart.
b) Calculate the upper control limit of the p chart.
c) Calculate the lower control limit of the p chart.
d) Create a p chart for the samples from the second set of 10 hours.
e) Is this process out of control?