The raw materials supplied by two vendors are compared. The vendors appear to supply materials that are normally distributed with the same mean, but the variability is a mater of concern. A sample of 16 lots from Vendor A yields a variance of 150. A sample of 21 lots from Vendor B reveals a variance of 225. Construct a 95% confidence interval for the ratio of population variances between Vendor A and Vendor B.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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The raw materials supplied by two vendors are compared. The vendors appear to supply
materials that are normally distributed with the same mean, but the variability is a mater
of concern. A sample of 16 lots from Vendor A yields a variance of 150. A sample of 21
lots from Vendor B reveals a variance of 225. Construct a 95% confidence interval for the
ratio of population variances between Vendor A and Vendor B.
4.
Transcribed Image Text:The raw materials supplied by two vendors are compared. The vendors appear to supply materials that are normally distributed with the same mean, but the variability is a mater of concern. A sample of 16 lots from Vendor A yields a variance of 150. A sample of 21 lots from Vendor B reveals a variance of 225. Construct a 95% confidence interval for the ratio of population variances between Vendor A and Vendor B. 4.
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