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A Sample of ROM Computer Chips Was Selected on Each

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A sample of ROM computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: 30161722191816231321181913253117122115291119251838208261225\begin{array} { l l l l l l l l l l } 30 & 16 & 17 & 22 & 19 & 18 & 16 & 23 & 13 & 21 \\18 & 19 & 13 & 25 & 31 & 17 & 12 & 21 & 15 & 29 \\11 & 19 & 25 & 18 & 38 & 20 & 8 & 26 & 12 & 25\end{array} Determine control limits for a 3-sigma p chart and specify any out-of-control points.

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blured image The control limits are blured image ; therefore LCL...

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