Scenario:

The HLT is a test used to measure the level of hostility in a person. Researchers are interested in comparing the mean HLT among two populations: (1) college students after attending a college football game when their team won and (2) college students after attending a college football game when their team lost. Independent, random samples of 15 students were obtained to represent each population.

The data is as follows:

Group HLT Score

1 79, 76, 74, 70, 81, 85, 73, 78, 69, 72, 83, 89, 72, 79, 75

2 78, 96, 85, 91, 77,103, 72, 93, 98, 86, 70, 110, 70, 91, 99

Part A

Select all of the inference procedures from the following list that might be appropriate to answer this research question.

(a) Paired t-test

(b) Wilcoxon signed-rank test

(c) Sign test

(d) two-sample t-test

(e) one-sample t-test

(f) Wilcoxon rank-sum test

Part B

Assess the data conditions for the statistical procedures you are considering.

Part C

Conduct the most appropriate hypothesis test to compare the central population values for HLT scores for the two populations. Use a 5% level of significance.

onull and alternative hypotheses

op-value (report to 4 decimal places, enter 0 if P < 0.00005)

oconclusion