Multiple Choice
Fifteen samples of size 10 are taken from a stable process.The average of the sample means is 32.8, and the average range of the samples is 1.5.What is the upper control limit for the R chart? Use the information contained in the attached chart.
A) 1.777
B) 1.653
C) 2.666
D) 2.480
Correct Answer:

Verified
Correct Answer:
Verified
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