The largest purchaser of care of the WorldBest Healthcare System complained that the average C-section rate at WorldBest had increased from 1999 to 2000 and was now over 21 percent. The average at other area hospitals was between 17 to 19 percent. To investigate the situation, WorldBest wants to set up a control chart to monitor the number of C-Sections every month.
1. What type of control chart should WorldBest Healthcare use and why?
2. Is the process in statistical control?
