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 1and 16 rats from group 2, Then their weight were recorded. The results are shown in the following table n Mean Median sd group 1 19 3.5 3.0 1.05 group 2 16 2.20 2.0 1.15 F15.12.0.05 0.404 F19,16,0.025 =0.386 F16,10,0.025 0.335 F16,10,0.05 =0.401 F15,12,0.1=0.496 | F19.16,0.05 =0.451 F10,16,0.025 0.286 F12.15,0.05 =0.382 F16,19,0.025 =0.371 F10,16,0.05 =0.354 F1215,0.1=0.475 F16,19,0.05 =0.437 Construct a 95% confidence interval for the ratio of the variances. [ Hint: because of the rounding select the closest interval]

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 1and 16 rats from group 2, Then their weight were recorded. The results are shown in the following table n Mean Median sd group 1 19 3.5 3.0 1.05 group 2 16 2.20 2.0 1.15 F15.12.0.05 0.404 F19,16,0.025 =0.386 F16,10,0.025 0.335 F16,10,0.05 =0.401 F15,12,0.1=0.496 | F19.16,0.05 =0.451 F10,16,0.025 0.286 F12.15,0.05 =0.382 F16,19,0.025 =0.371 F10,16,0.05 =0.354 F1215,0.1=0.475 F16,19,0.05 =0.437 Construct a 95% confidence interval for the ratio of the variances. [ Hint: because of the rounding select the closest interval]

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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