Children in two elementary school classrooms were given two versions of the sametest, but with the order of questions arranged from easier to more difficult inVersion A and in reverse order in Version B. Randomly selected students from eachclass were given Version A and the rest Version B. The results are shown in the table.nx SEVersion A 31 83 4.6Version B 32 78 4.31. Construct the 90% confidence interval for the difference in the means of thepopulations of all children taking Version A of such a test and of all children takingVersion B of such a test.Lower endpoint (round to one decimal place) 3.2=Upper endpoint (round to one decimal place)= 6.82. Test at the 1% level of significance the hypothesis that the A version of the test iseasier 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):

For the given data, we need to test at 1% level of significance the hypothesis that the A vesion…

Answered: 2. Test at the 1% level of significance…

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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For the situation described below, state the null hypothesis, Ho, and the alternative hypothesis, H,, to be tested. (Enter != for + as needed.) A statistical test is designed to show that the mean u is different from 150. Hoi Need Help? Read It
Surprisingly, a study found that children under stress reported fewer symptoms of depression and anxiety but scored higher on a Lie Scale (a measure of tendency to give socially desirable responses). The population mean for the Lie Scale for nonstressed children is 3.8. The sample of 24 children's scores are listed below. Test the hypothesis that children under stress are more likely to give socially desirable answers. Write a complete conclusion in the context of the problem. 2.9 3.3 5.0 3.7 3.9 3.7 3.4 4.3 4.2 3.8 4.7 4.1 4.3. 3.6. 4.6. 2.9. 4.2. 4.0. 4.5. 4.4 4.0. 3.5 4.4. 4.7
Suppose are running a study/poll about the proportion of men over 50 who regularly have their prostate examined. You randomly sample 102 people and find that 87 of them match the condition you are testing. Suppose you are have the following null and alternative hypotheses for a test you are running: Ho:p = 0.86 Ha:p < 0.86 Calculate the test statistic, rounded to 3 decimal places. Z = Question Help: D Video Submit Question hp % & 3 4 7 8 5
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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):