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Name: The piston diameter of a certain hand pump is .5 inch. The quality co
Uploaded: 2024-03-20T07:07:12.000Z
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Description: The piston diameter of a certain hand pump is .5 inch. The quality control manager determines the standard deviation is .004 inch. The manager believes a recalibration will lower the variability. After recalibration, 25 random pistons are checked

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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The piston diameter of a certain hand pump is .5 inch. The quality control manager determines the standard deviation is .004 inch. The manager believes a recalibration will lower the variability. After recalibration, 25 random pistons are checked from the production line and found to have a standard deviation of .0025 inch. Was the recalibration effective? Find the test statistic, χ2=χ2=_____________ (Use 3 decimals)

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