The aim of a study is to test the ratio of variances in the weight of two groups of rats beingunder a certain drugs A ( group 1) and B ( group 2) . A random sample of 19 rats was selectedfrom group land 16 rats from group 2, Then their weight were recorded. The results areshown in the following tablesd Median Mean n1.053.03.5 20 group 11.152.0 2.20 17 group 2F19,16,0.025 =0.386 F15,12,0.05 = 0.404 F16,10,0.025=0.335F19,16,0.05 = 0.451 F15,12,0.1 0.496 F16.10,0.05=0.401F16,19,0.025 0.371 F12,15,0.05 =0.382 F10.16,0.025 =0.286F16,19,0.05 0.437 F12150.1 0.475 F10,16,0.05 0.354Construct a 95% confidence interval for the ratio of the variances. [ Write only the final result[ in the box below

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Construct a 95% confidence interval for the ratio of the variances. [ Write only the final result [ in the box below

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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Question

The aim of a study is to test the ratio of variances in the weight of two groups of rats being
under a certain drugs A ( group 1) and B ( group 2) . A random sample of 19 rats was selected
from group land 16 rats from group 2, Then their weight were recorded. The results are
shown in the following table
sd Median Mean n
1.05
3.0
3.5 20 group 1
1.15
2.0 2.20 17 group 2
F19,16,0.025 =0.386 F15,12,0.05 = 0.404 F16,10,0.025=0.335
F19,16,0.05 = 0.451 F15,12,0.1 0.496 F16.10,0.05=0.401
F16,19,0.025 0.371 F12,15,0.05 =0.382 F10.16,0.025 =0.286
F16,19,0.05 0.437 F12150.1 0.475 F10,16,0.05 0.354
Construct a 95% confidence interval for the ratio of the variances. [ Write only the final result
[ in the box below

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