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Factory A Factory B No. of bulbs in sample 100 200 Average Life 1100 900 Standard Deviation 240 220 From the above information, determine whether the difference between the variability of life of bulbs from each sample is significant. Use 1% level of significance.

Factory A Factory B No. of bulbs in sample 100 200 Average Life 1100 900 Standard Deviation 240 220 From the above information, determine whether the difference between the variability of life of bulbs from each sample is significant. Use 1% level of significance.

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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6. A large organization produces electric bulbs in each of its two factories. It is suspected that the efficiencies in the factories is not alike, thus a test is carried out by ascertaining the variability of the life of the bulbs produced by each factory. The results are as follows : 10 Factory A Factory B No. of bulbs in sample 100 200 Average Life 1100 900 Standard Deviation 240 220 From the above information, determine whether the difference between the variability of life of bulbs from each sample is significant. Use 1% level of significance. (Given that Zo os = ±1.96, Zo01 +2.58. Zo os - 1.65, Zo01 = 2.33)
Transcribed Image Text:6. A large organization produces electric bulbs in each of its two factories. It is suspected that the efficiencies in the factories is not alike, thus a test is carried out by ascertaining the variability of the life of the bulbs produced by each factory. The results are as follows : 10 Factory A Factory B No. of bulbs in sample 100 200 Average Life 1100 900 Standard Deviation 240 220 From the above information, determine whether the difference between the variability of life of bulbs from each sample is significant. Use 1% level of significance. (Given that Zo os = ±1.96, Zo01 +2.58. Zo os - 1.65, Zo01 = 2.33)
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