Question

Suppose that a process is in a state of control and we have the following information for a human weights measurement study:
Average weight of males in the study = 150 lbs.
Average range of the male weights = 100 lbs.
A2 = .577
D3 = 0
D4 = 2.115
What is the upper control limit for the average (mean) chart?
A.207.7 lbs
B.92.3 lbs
C.361.5 lbs
D.175 lbs

Answer

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