Answered: Machine 1 Machine 2 2.95 3.22 3.45 3.30…

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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Machine 1	Machine 2
2.95	3.22
3.45	3.30
3.50	3.34
3.75	3.28
3.48	3.29
3.26	3.25
3.33	3.30
3.20	3.27
3.16	3.38
3.20	3.34
3.22	3.35
3.38	3.19
3.90	3.35
3.36	3.05
3.25	3.36
3.28	3.28
3.20	3.30
3.22	3.28
2.98	3.30
3.45	3.20
3.70	3.16
3.34	3.33
3.18
3.35
3.12

The variance in a production process is an important measure of the quality of the process. A large variance often signals an opportunity for improvement in the process by finding ways to reduce the process variance. Conduct a statistical test to determine whether there is a significant difference between the variances in the bag weights for two machines. Use a .05 level of significance. What is your conclusion? Which machine, if either, provides the greater opportunity for quality improvements?

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