A random sample of 15 metal rods used in an automobile suspension system is selected, and the
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A random sample of 15 metal rods used in an automobile suspension system is selected, and the diameter is measured. The sample mean and standard deviation are 8.23 and 0.025 mm respectively. Assuming that the distribution of rod diameter is normal, find a 99% confidence interval on mean rod diameter.
Related Book For
Applied Statistics and Probability for Engineers
ISBN: 978-1118539712
6th edition
Authors: Douglas C. Montgomery, George C. Runger
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