A paper mill has decided to use a c-chart to monitor the number of imperfections in large
Question:
(a) Construct a c-chart. Why does it appear that the process was out of control at certain times while this data set was collected?
(b) What c-chart would you recommend be used to monitor future samples of paper?
(c) How many imperfections would need to be discovered in a future randomly sampled paper sheet for the process to be considered to be out of control?
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Related Book For
Probability And Statistics For Engineers And Scientists
ISBN: 9780495107576
3rd Edition
Authors: Anthony Hayter
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