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Suppose we have two groups of students, those who go for tutoring help and those who do not. The following is the mathematics test results from these two groups of students. with tutor help without tutor help 75 81 66 67 哥 80 65 82 76 73 59 64 88 51 47 58 52 93 60 (a) Test for the equality of variances of mathematics test results from the students with and without tutoring help at a = 0.1 (b) Test whether there is difference in the mean mathematics test results for the students with and without tutoring help at 2% significance level. (c) Find the 95% confidence interval for the difference between two groups' average mathematics test results.

Suppose we have two groups of students, those who go for tutoring help and those who do not. The following is the mathematics test results from these two groups of students. with tutor help without tutor help 75 81 66 67 哥 80 65 82 76 73 59 64 88 51 47 58 52 93 60 (a) Test for the equality of variances of mathematics test results from the students with and without tutoring help at a = 0.1 (b) Test whether there is difference in the mean mathematics test results for the students with and without tutoring help at 2% significance level. (c) Find the 95% confidence interval for the difference between two groups' average mathematics test results.

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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Suppose we have two groups of students, those who go for tutoring help and those who do not. The following is the mathematics test results from these two groups of students. with tutor help without tutor help 66 67 80 65 82 76 73 59 64 75 81 51 47 58 52 93 60 88 (a) Test for the equality of variances of mathematics test results from the students with and without tutoring help at a = 0.1 (b) Test whether there is difference in the mean mathematics test results for the students with and without tutoring help at 2% significance level. (c) Find the 95% confidence interval for the difference between two groups' average mathematics test results.
Transcribed Image Text:Suppose we have two groups of students, those who go for tutoring help and those who do not. The following is the mathematics test results from these two groups of students. with tutor help without tutor help 66 67 80 65 82 76 73 59 64 75 81 51 47 58 52 93 60 88 (a) Test for the equality of variances of mathematics test results from the students with and without tutoring help at a = 0.1 (b) Test whether there is difference in the mean mathematics test results for the students with and without tutoring help at 2% significance level. (c) Find the 95% confidence interval for the difference between two groups' average mathematics test results.
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