Question: The mean and standard deviation for a process are = 85 and s = 10. For the variable control chart, a sample size of 21

The mean and standard deviation for a process are = 85 and s = 10. For the variable control chart, a sample size of 21 will be used. The standard deviation of the sampling distribution is 2.18

1.84

1.92

2.12

2.25

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