Question: please answer asap! A quality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control
please answer asap!
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 Observations #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? O all of the machines machine #3 machine #1 none of the machines machine #2
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