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]

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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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 16 rats was selected from group land 13 rats from group 2, Then their weight were recorded. The results are shown in the following table n Mean Median sd group 1 16 3.5 3.0 1.05 group 2 13 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 F12,15,0.1=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 ] O a. None of these O b. [ 2.488, 0.238 ] O c. [ 2.160 , 0.309 ] O d. [2.063 , 0.318]
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 16 rats was selected from group land 13 rats from group 2, Then their weight were recorded. The results are shown in the following table n Mean Median sd group 1 16 3.5 3.0 1.05 group 2 13 2.20 2.0 1.15 F15,12,0.05 = 0.404 F 19,16,0.025 = 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 F 12,15,0.05 =0.382 F16,19,0.025 = 0.371| F10,16,0.05 = 0.354 F12,15,0.1 =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 ] O a. None of these O b. [ 2.488, O0.238 ] O c. [ 2.160 , 0.309] O d. [2.063 , 0.318]
Hi, I'm stuck with question 2. Question 1 given the example for this question
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