The emergency medical response (EMR) team inBrookville has instituted a quality improvement program and it makes extensive use of SPC charts. It wants to mon-itor the response times for emergency calls to make sure they stay around nine minutes on average. The EMRadministration staff has randomly timed five emergencycalls each month during a 12-month period and collectedthe following data. Develop a -chart in conjunction with an R-chart to moni-tor the response times and indicate if the process appears to be in control. If the EMR team cannot consistently meet itstarget, what kind of actions (i.e., improvements) might itneed to make to achieve its target? Month Response Times (mins)1 8.6 4.5 6.2 5.7 10.12 10.1 8.9 7.3 8.1 6.43 5.3 9.4 10.2 10.2 5.84 6.1 11.5 9.3 9.4 9.6

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The emergency medical response (EMR) team in
Brookville has instituted a quality improvement program

and it makes extensive use of SPC charts. It wants to mon-
itor the response times for emergency calls to make sure

they stay around nine minutes on average. The EMR
administration staff has randomly timed five emergency
calls each month during a 12-month period and collected
the following data.

Develop a -chart in conjunction with an R-chart to moni-
tor the response times and indicate if the process appears to

be in control. If the EMR team cannot consistently meet its
target, what kind of actions (i.e., improvements) might it
need to make to achieve its target?

Month Response Times (mins)
1 8.6 4.5 6.2 5.7 10.1
2 10.1 8.9 7.3 8.1 6.4
3 5.3 9.4 10.2 10.2 5.8
4 6.1 11.5 9.3 9.4 9.6

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