1 Take Test: Statistics Refresher Pos X + u/webapps/assessment/take/launch.jsp?course_assessment_id=_30185_1&course_id=_25601_1&content_id=_1182968_1&step=null Question Completion Status: QUESTION 14 Researchers wanted to explore whether students who took statistics in the last five years scored higher in a statistics course at the graduate level than those who had not taken statistics in the last five years. The following null and one-tailed alternative hypotheses were constructed: Ho: Those who took a statistics course in the last five years do not score higher in the graduate-level statistics course than those who did not take stats in the last five years. HA: Those who took a statistics course in the last five years score higher in the graduate-level statistics course than those who did not take a statistics course in the last five years. A type 2 error in this study would mean: O The researchers concluded those who took a statistics course in the last five years scored lower than those who did not take a statistics course in the last five years. The researchers concluded there was no difference on scores in the graduate-level statistics course between the two groups when there actually was a difference. The researchers rejected the null hypothesis that there was no difference between the groups because they used the wrong statistical test. The researchers concluded that those who took a statistics course in the last five years scored higher than those who did not take a statistics course in the last five years when, in fact, there was no difference in scores between the two groups. QUESTION 15 In a study, a researcher conducted an independent samples t-test on a sample of 500 young people. The results yielded a p-value of 0.01. The researchers had set the level of significance at 0.05. Which of the following statement(s) about the p-value is/are NOT correct? (Select all that apply) The difference between groups was unlikely to have occurred by chance alone. The p-value was likely not affected by the sample size