Multiple Choice
Random samples of four items are selected from a manufacturing process at regular intervals and a certain quality characteristic is measured. After 25 samples,ΣX = 15,350 and ΣR = 411.4. To construct a mean chart,what is the upper control limit for the mean?
A) 614.00
B) 411.4
C) 626.00
D) 3837.5
Correct Answer:
Verified
Correct Answer:
Verified
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