Question

A police station in City D has instituted a quality-improvement program that makes extensive use of SPC charts. It wants to monitor the response times for emergency calls to make sure they stay around nine minutes on average. The administration staff randomly times five emergency calls each month during a 6 month period and collects the following data. Month Response Times (mins) 10.1 6.1 9.7 15.6 9.3 10.3 8.9 11.5 7.3 9.3 7.5 10.7 9.9 11.2 8.1 9.4 8.5 11.5 10.4 7.5 6.4 9.6 11.6 7.5 14.3 6.9 2 10.4 6.6 7.4 9.6 4 6 1) Develop a mean control chart and evaluate whether the emergency response process is in control. (20%) Develop an R-chart and evaluate whether the emergency response process is in control. (20%) 2)

Answer 1

null