The AMS technical services team has embarked on a quality improvement effort. Its first project relates to maintaining the target upload speed for its Internet service subscribers. Upload speeds are measured on a device that records the results on a standard scale in which the target value is 1.0.

a. Construct the appropriate control charts for these data.

b. Is the process in a state of statistical control? Explain.

c. What should the team recommend as the next step to improve the process?