Multiple Choice
A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. Accordingly, he sampled four units of output from each machine, with the following results
What is the sample mean for machine #1?
A) 15
B) 16
C) 17
D) 21
E) 23
Correct Answer:
Verified
Correct Answer:
Verified
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