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A steel pipe company recently developed a new pipe product for a customer. According to?specifications, the pipe is supposed to have an average outside diameter
A steel 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, as shown in the accompanying table. Complete parts a and b below.
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