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2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):

2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):

MATLAB: An Introduction with Applications
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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Children in two elementary school classrooms were given two versions of the same test, but with the order of questions arranged from easier to more difficult in Version A and in reverse order in Version B. Randomly selected students from each class were given Version A and the rest Version B. The results are shown in the table. nx S E Version A 31 83 4.6 Version B 32 78 4.3 1. Construct the 90% confidence interval for the difference in the means of the populations of all children taking Version A of such a test and of all children taking Version B of such a test. Lower endpoint (round to one decimal place) 3.2 = Upper endpoint (round to one decimal place) = 6.8 2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):
Transcribed Image Text:Children in two elementary school classrooms were given two versions of the same test, but with the order of questions arranged from easier to more difficult in Version A and in reverse order in Version B. Randomly selected students from each class were given Version A and the rest Version B. The results are shown in the table. nx S E Version A 31 83 4.6 Version B 32 78 4.3 1. Construct the 90% confidence interval for the difference in the means of the populations of all children taking Version A of such a test and of all children taking Version B of such a test. Lower endpoint (round to one decimal place) 3.2 = Upper endpoint (round to one decimal place) = 6.8 2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):
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