Business, 15.04.2020 03:40 shontelsims
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:
Machine Measurements
#1 17 15 15 17
#2 16 25 18 25
#3 23 24 23 22
For upper and lower control limits of 23.29 and 16.71, which machine(s), if any, appear(s) to have an out-of-control process mean?
a. machine #1
b. machine #2
c. machine #3
d. all of the machines
e. none of the machines
Answers: 1
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A quality analyst wants to construct a control chart for determining whether three machines, all pro...
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