8.61 Bolts being produced in a certain plant are checked for tolerances. Those not meeting tolerance specifications

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8.61 Bolts being produced in a certain plant are checked for tolerances. Those not meeting tolerance specifications are considered to be defective. Fifty bolts are gauged for tolerance every hour. The results for 30 hours of sampling are listed in table below.

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a Construct control limits for the proportion of defectives based on these data.
b Would you use the control limits found in part

(a) for future samples? Why or why not?

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Probability And Statistics For Engineers

ISBN: 9781133006909

5th Edition

Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr

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