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Draw the operating characteristic curve

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Reference no: EM132848427

A vendor submits lots of fabric to a textile manufacturer. The manufacturer wants to know if the lot average breaking strength exceeds 200 psi. if so, she wants to accept the lot. Past experience indicates that a reasonable value for the variance of breaking strength is 100 (psi)2. The hypotheses to be tested are H0 : = 200 vs. H1 : > 200: The manufacturer decides to randomly select a number of specimens, measure their breaking strengths and test the hypotheses with = 5%.

(a) Draw (by hand) the operating characteristic curve when 9 specimens are selected for the test. (Hint: Z-test should be used).

Reference no: EM132848427

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