3.56 Kane (1986) discusses the concentricity of an engine oil seal groove. Concentric- ity measures the cross-sectional coaxial relationship of two cylindrical features. In this case, he studies the concentricity of an oil seal groove and a base cylin- der in the interior of the groove. He measures the concentricity as a positive deviation using a dial indicator gauge. Historically, this process has produced an average concentricity of 5.6 with a standard deviation of 0.7. To monitor this process, he periodically takes a random sample of three measurements. If the average is greater than 6.8 or less than 4.3, he concludes that the process mean has shifted. Assume that the process mean is 5.6. a. Find the probability that on the next sample he concludes the process mean has shifted purely due to random chance. b. What did you assume in order to find this probability?
3.56 Kane (1986) discusses the concentricity of an engine oil seal groove. Concentric- ity measures the cross-sectional coaxial relationship of two cylindrical features. In this case, he studies the concentricity of an oil seal groove and a base cylin- der in the interior of the groove. He measures the concentricity as a positive deviation using a dial indicator gauge. Historically, this process has produced an average concentricity of 5.6 with a standard deviation of 0.7. To monitor this process, he periodically takes a random sample of three measurements. If the average is greater than 6.8 or less than 4.3, he concludes that the process mean has shifted. Assume that the process mean is 5.6. a. Find the probability that on the next sample he concludes the process mean has shifted purely due to random chance. b. What did you assume in order to find this probability?
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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