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Twenty Samples of Size 6 Were Collected for a Variable

Question 32

Multiple Choice

Twenty samples of size 6 were collected for a variable measurement.Determine the upper control limit (UCL) and lower control limit (LCL) for an R-chart if the sum of the sample ranges equals 88.0.


A) UCL = 8.8176, LCL = 0.0000
B) UCL = 9.3016, LCL = 0.3344
C) UCL = 13.2000, LCL = 0.0000
D) UCL = 29.3921, LCL = 0.0000

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