Question: How many standard deviations is the upper control limit, UCL, abovethe long-run center line, X-bar-bar? a. 1 b. 2 c. 3 d. 6 e. 12

How many standard deviations is the upper control limit, UCL, abovethe long-run center line, X-bar-bar?

a. 1

b. 2

c. 3

d. 6

e. 12

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