Samples Production
The mean of the sample means and the pooled standard deviation of 40 samples of size 8 taken from a production process under control are $\bar{\bar { x } }= 215.6$ ,and S = 14.5,respectively.
-{40 Samples Production Narrative} Calculate the centerline and control limits for the $\bar { x }$ chart.

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The Answer of Samples Production
The mean of the sample means and the pooled standard deviation of 40 samples of size 8 taken from a production process under control are $\bar{\bar { x } }= 215.6$ ,and S = 14.5,respectively.
-{40 Samples Production Narrative} Calculate the centerline and control limits for the $\bar { x }$ chart.

Samples Production the Mean of the Sample Means and the Pooled

Samples Production
the Mean of the Sample Means and the Pooled