Setting up a p chart. After inspecting Figure 27.16, you decide to monitor the next four weeks' absenteeism rates using a center line and control limits calculated from the last two weeks of data recorded in Table 27.8. Find for these 10 days and give the new values of CL, LCL, and UCL. (Until you have more data, these are trial control limits. As long as you are taking steps to improve absenteeism, you have not reached the process-monitoring stage.)
Figure 27.16: