The piston diameter of a certain hand pump is 3 inch. The manager determines that the diametersare normally distributed, with a mean of 0.3 inch and a standard deviation of 0.003 inch. Afterrecalibrating the production machine, the manager randomly selects 24 pistons and determinesthat the standard deviation is 0.0027 inch. Is there significant evidence for the manager toconclude that the standard deviation has decreased at the a=0.10 level of significance?The Hypotheses TestHo:o = 0.003H1:00.003( Choose one the following: a for =, b for >, c for <, d for )Test statisticX2(Round to two decimal places.)P value =(Round to three decimal places.)Conclusion:(Choose: R for Reject or F for Fail to reject)

Consider that σ is the population standard deviation of piston dimeters.

Answered: The piston diameter of a certain hand…

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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