Suppose we have two normal populations denoted A and B, and we want to compare their population variances by estimating the ratio: variance of population B divided by variance of population A. We have an independent random sample of size 9 from population A and an independent random sample of size 15 from population B. The sample variance for population B turns out to be 30 percent larger than that for population A. What is the 95 percent confidence interval for the ratio: population variance of population B divided by population variance of population A? O .312 to 4.277 NONE OF THE OTHERS .390 to 5.369 .273 to 8.931 O .195 to 6.318
Suppose we have two normal populations denoted A and B, and we want to compare their population variances by estimating the ratio: variance of population B divided by variance of population A. We have an independent random sample of size 9 from population A and an independent random sample of size 15 from population B. The sample variance for population B turns out to be 30 percent larger than that for population A. What is the 95 percent confidence interval for the ratio: population variance of population B divided by population variance of population A? O .312 to 4.277 NONE OF THE OTHERS .390 to 5.369 .273 to 8.931 O .195 to 6.318
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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How do you find the 95% confidence interval for the ratio of population variance?

Transcribed Image Text:Suppose we have two normal populations denoted A and B,
and we want to compare their population variances by
estimating the ratio: variance of population B divided by
variance of population A. We have an independent random
sample of size 9 from population A and an independent
random sample of size 15 from population B. The sample
variance for population B turns out to be 30 percent larger
than that for population A. What is the 95 percent confidence
interval for the ratio: population variance of population B
divided by population variance of population A?
.312 to 4.277
NONE OF THE OTHERS
.390 to 5.369
.273 to 8.931
.195 to 6.318
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