Managing Supply Chain and Operations 1st Edition by Thomas Foster ,Scott Sampson,Cynthia Wallin,Scott Webb

Exercise 44

A company samples 200 items per eight-hour shift and identifies the number of defective item produced. The results of the most recent 15 samples are to be used to develop a p chart to monitor the proportion defective for the process. The sampled data are as follows: Develop a p chart and comment on whether it appears that the company's process is in control.