The Baltimore Steel and Pipe Company recently developed a new pipe product for a customer. According to

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The Baltimore Steel and Pipe Company recently developed a new pipe product for a customer. According to specifications, the pipe is supposed to have an average outside diameter of 2.00 inches with a standard deviation equal to 0.10 inch, and the distribution of outside diameters is to be normally distributed. Before going into full-scale production, the company selected a random sample of 30 sections of pipe from the initial test run. The following data were recorded:

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a. Using a significance level of 0.01, perform the appropriate test.
b. Based on these data, should the company conclude that it is meeting the product specifications? Explain your reasoning.
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Business Statistics A Decision Making Approach

ISBN: 9780133021844

9th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry

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