Question: A design engineer wants to construct a mean chart for controlling the diameter for a component used in surgeries. The following table contains measurements (in

A design engineer wants to construct a mean chart
A design engineer wants to construct a mean chart for controlling the diameter for a component used in surgeries. The following table contains measurements (in millimeters) of the diameter for a component. Four samples of five units each were taken at random two-hour intervals. What is the estimate of the process mean for whenever it is in control? Sample Measurements (in millimeters) 9 10 9 1 8 8 2 9 7 9 9 8 3 8 9 9 10 10 4 9 9 9 9 9 9.2 8.5 8.4 09 O 8.85

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