What is the estimate of the process mean for whenever it is under control?
A)16
B)19
C)20
D)21
E)23

Question

Quizplus · Accepted Answer

When a process is under control, the mean of the process is equal to the center line of the control chart. Based on the information given, the center line of the control chart is 20 (since the control limits are given as 14 and 26, which are equidistant from the centerline). Therefore, the estimate of the process mean is 20.

What Is the Estimate of the Process Mean for Whenever