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An anger-management course claims that, after completing its seminar, participants will lose their tempers less often. Always a skeptic, you decide to test this claim. A random sample of 12 seminar participants is chosen, and these participants are asked to record the number of times that they lost their tempers in the two weeks prior to the course. After the course is over, the same participants are asked to record the number of times that they lost their tempers in the next two weeks. The following table lists the results of the survey. Using these data, test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let participants before completing the anger-management course be Population 1 and let participants after completing the anger-management course be Population 2. Number of Times Temper Was Lost during a Two-Week Period Before 3 3 10 10 6. 8 7. 9. 10 After 4 3 8 6. 9. 8. 6. 9. 11 1. State the null and alternative hypotheses in terms of the Hd: 2. Find the test statistic and p-value using the TI-84. You willI have to use the subtraction method as explained in the video as there is no direct paired t-test: 3. Compare the p-value to the level of significance and state whether the decision is to fail to reject the null or reject the null: 4. State the conclusion in terms of whether there is sufficient evidence to support the claim that after participating in the course, participants lose their temper less often. 3.

An anger-management course claims that, after completing its seminar, participants will lose their tempers less often. Always a skeptic, you decide to test this claim. A random sample of 12 seminar participants is chosen, and these participants are asked to record the number of times that they lost their tempers in the two weeks prior to the course. After the course is over, the same participants are asked to record the number of times that they lost their tempers in the next two weeks. The following table lists the results of the survey. Using these data, test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let participants before completing the anger-management course be Population 1 and let participants after completing the anger-management course be Population 2. Number of Times Temper Was Lost during a Two-Week Period Before 3 3 10 10 6. 8 7. 9. 10 After 4 3 8 6. 9. 8. 6. 9. 11 1. State the null and alternative hypotheses in terms of the Hd: 2. Find the test statistic and p-value using the TI-84. You willI have to use the subtraction method as explained in the video as there is no direct paired t-test: 3. Compare the p-value to the level of significance and state whether the decision is to fail to reject the null or reject the null: 4. State the conclusion in terms of whether there is sufficient evidence to support the claim that after participating in the course, participants lose their temper less often. 3.

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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An anger-management course claims that, after completing its seminar, participants will lose their tempers less often. Always a skeptic, you decide to test this claim. A random sample of 12 seminar participants is chosen, and these participants are asked to record the number of times that they lost their tempers in the two weeks prior to the course. After the course is over, the same participants are asked to record the number of times that they lost their tempers in the next two weeks. The following table lists the results of the survey. Using these data, test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let participants before completing the anger-management course be Population 1 and let participants after completing the anger-management course be Population 2. Number of Times Temper Was Lost during a Two-Week Period Before 3. 10 10 6. 8 9. 10 7 After 4 4 3 8 6. 9. 8. 6. 9. 11 1. State the null and alternative hypotheses in terms of the ld: 2. Find the test statistic and p-value using the TI-84. You wilIl have to use the subtraction method as explained in the video as there is no direct paired t-test: 3. Compare the p-value to the level of significance and state whether the decision is to fail to reject the null or reject the null: 4. State the conclusion in terms of whether there is sufficient evidence to support the claim that after participating in the course, participants lose their temper less often.
Transcribed Image Text:An anger-management course claims that, after completing its seminar, participants will lose their tempers less often. Always a skeptic, you decide to test this claim. A random sample of 12 seminar participants is chosen, and these participants are asked to record the number of times that they lost their tempers in the two weeks prior to the course. After the course is over, the same participants are asked to record the number of times that they lost their tempers in the next two weeks. The following table lists the results of the survey. Using these data, test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let participants before completing the anger-management course be Population 1 and let participants after completing the anger-management course be Population 2. Number of Times Temper Was Lost during a Two-Week Period Before 3. 10 10 6. 8 9. 10 7 After 4 4 3 8 6. 9. 8. 6. 9. 11 1. State the null and alternative hypotheses in terms of the ld: 2. Find the test statistic and p-value using the TI-84. You wilIl have to use the subtraction method as explained in the video as there is no direct paired t-test: 3. Compare the p-value to the level of significance and state whether the decision is to fail to reject the null or reject the null: 4. State the conclusion in terms of whether there is sufficient evidence to support the claim that after participating in the course, participants lose their temper less often.
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