Thirty samples of size 4 were drawn from a production process. a. Construct an S chart. b.
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Thirty samples of size 4 were drawn from a production process.
a. Construct an S chart.
b. Construct an x chart.
c. Do the charts allow you to conclude that the process is under control?
d. If the process went out of control, which of the following is the likely cause: level shift, instability, trend, or cycle?
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