Control of TFEs at Hallenvale Hospital (page 451)
1. Using the data in Table 8.8, what is the average percentage of infections?
2. Construct an appropriate control chart, compute the upper and lower control limits, plot the data on a control chart, and determine if it is under statistical control. Based on your analysis, what action, if any, should management take?
3. What TFE should management use to monitor future system quality?