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A manufacturer of photographic film produces an average of 12000 rolls of various types of film each day An inspector samples 25 from each day’s production and tests them for accuracy

A manufacturer of photographic film produces an average of 12,000 rolls of various types of film each day. An inspector samples 25 from each day’s production and tests them for accuracy of color reproduction and overall film quality. During 23 consecutive production days, the inspector rejected the following numbers of rolls of film:

 

a. Based on these observations, compute three-sigma limits for a p chart.

b. Do any of the points fall outside the control limits? If so, recompute the three-sigma limits after eliminating the out-of-control points.

Jul 27 2020 View more View Less

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