Question
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
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.
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Applied Statistics And Probability For Engineers
Authors: Douglas C. Montgomery, George C. Runger
6th Edition
1118539710, 978-1118539712
