In each of Exercises, use the Mann–Whitney test to perform the required hypothesis testSAT Essay Scores. The SAT is a standardized test required for most college admissions in the United States. It is owned, published, and developed by the College Board and results are reported in College-Bound Seniors Total Group Prole Report. In 2006, an essay section with possible scores ranging from 2 to 12 was added to the test. The following essay scores are from samples of students who took their SAT during either their freshman or senior year. Freshman Senior 8 8 8 6 6 8 6 7 9 9 4 9 6 8 5 10 8 6 5 8 At the 1% significance level, is there sufficient evidence to conclude that the median SAT essay score is lower for students who take the SAT during their freshman year than for those who take it during their senior year?
In each of Exercises, use the Mann–Whitney test to perform the required hypothesis test
SAT Essay Scores. The SAT is a standardized test required for most college admissions in the United States. It is owned, published, and developed by the College Board and results are reported in College-Bound Seniors Total Group Prole Report. In 2006, an essay section with possible scores
| Freshman | Senior |
| 8 | 8 | 8 | 6 | 6 | 8 | 6 | 7 | 9 | 9 |
| 4 | 9 | 6 | 8 | 5 | 10 | 8 | 6 | 5 | 8 |
At the 1% significance level, is there sufficient evidence to conclude that the median SAT essay score is lower for students who take the SAT during their freshman year than for those who take it during their senior year?
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