A copper smelting process is supposed to reduce the arsenic content of the copper to lessthan 1000 ppm. Let u denote the mean arsenic content for copper treated by this process,and assume that the standard deviation of arsenic content is o = 100 ppm. The sample meanarsenic content x of 75 copper specimens will be computed, and the null hypothesis Ho : 21000 will be tested against the alternate H1 : µ < 1000.A decision is made to reject Ho if X < 980. Find the level of this test.a.b.Find the power of the test in part (a) if the true mean content is 965 ppm.For what values of X should H, be rejected so that the power of the test will be 0.95C.when the true mean content is 965?d.For what values of X should Ho be rejected so that the level of the test will be 5%?e.What is the power of a 5% level test if the true mean content is 965 ppm?f.How large a sample is needed so that a 5% level test has power 0.95 when the truemean content is 965 ppm?

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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