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On-The-Ball, Inc., makes ball bearing that are used in tractors and other equipment. On the 8-to-4 shift, a random sample of 16 ball bearings is selected and the diameter are measured. The variance is 17.39. Later, a random sample of 13 ball measures is selected from 4-to-midnight shift, and the variance for the diameter measures is found to be 12.83. Test the hypothesis that the population variance for both shifts are equal.

On-The-Ball, Inc., makes ball bearing that are used in tractors and other equipment. On the 8-to-4 shift, a random sample of 16 ball bearings is selected and the diameter are measured. The variance is 17.39. Later, a random sample of 13 ball measures is selected from 4-to-midnight shift, and the variance for the diameter measures is found to be 12.83. Test the hypothesis that the population variance for both shifts are equal.

MATLAB: An Introduction with Applications
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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4. On-The-Ball, Inc., makes ball bearing that are used in tractors and other equipment. On the 8-to-4 shift, a random sample of 16 ball bearings is selected and the diameter are measured. The variance is 17.39. Later, a random sample of 13 ball measures is selected from 4-to-midnight shift, and the variance for the diameter measures is found to be 12.83. Test the hypothesis that the population variance for both shifts are equal.
Transcribed Image Text:4. On-The-Ball, Inc., makes ball bearing that are used in tractors and other equipment. On the 8-to-4 shift, a random sample of 16 ball bearings is selected and the diameter are measured. The variance is 17.39. Later, a random sample of 13 ball measures is selected from 4-to-midnight shift, and the variance for the diameter measures is found to be 12.83. Test the hypothesis that the population variance for both shifts are equal.
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