Using .95 control limits, (5% risk of Type I error), which instructor(s), if any, should he conclude is (are) out of control?
A)none
B)Prof.B
C)Prof.D
D)both Prof.B and Prof.D
E)all

Question

Quizplus · Accepted Answer

To determine if an instructor is out of control, we need to check if any of their data points fall outside the control limits. Based on the given data, both Professor B and Professor D have data points that fall outside the control limits, and hence, they are the only ones who are out of control. Therefore, the answer is D.

Using 95 Control Limits, (5% Risk of Type I Error), Which