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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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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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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