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An R Chart Is to Be Developed for Use in Quality

Question 45

Multiple Choice

An R Chart is to be developed for use in quality control.The average of the ranges is calculated to be 0.45.The sample sizes were 9 each.What would the lower control limit be?


A) 0.8172
B) 0.6012
C) 0.0828
D) 0.1566
E) 0.7434

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