Question

A manager wants to build 3-sigma x-bar control limits for a process. The target value for the mean of the process is 10 units, and the standard deviation of the process is 6. If samples of size 9 are to be taken, what will be the upper and lower control limits, respectively?

A) -8 and 28

B) 16 and 4

C) 12 and 8

D) 4 and 16

E) 8 and 12

Answer

This answer is hidden. It contains 19 characters.