A vaccine production company has invested in an automatic tester to monitor the impurity levels in its

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A vaccine production company has invested in an automatic tester to monitor the impurity levels in its vaccines. Previously all testing was done by hand on a sample of batches of serum. According to the company's specifications, all vaccine must have impurity levels of less than 0.03 milligrams per 1000 litres. In order to test the effectiveness of its new automatic sampling equipment, the company runs a number of batches through the process with known levels of impurity. The following table shows the level of impurity of each batch and whether the new process accepted or rejected the batch. From these data, estimate the type I and type II error levels for the process.

0.035 0.028 (rejected) (accepted) 0.040 (rejected) 0.022 (accepted) 0.031 (rejected) 0.011 (accepted) 0.029

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Operations Management

ISBN: 9780273708476

5th Edition

Authors: Nigel Slack, Stuart Chambers, Robert Johnston

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