The professor in question la has administered an exam to her students. The exam scores of her students are shown below: Front Row Students Back Row Students Exam Scores Exam Scores 93 79 95 61 94 80 99 97 97 65 95 89 .Test whether or not there's a difference between front row students' exam scores and back row students' exam scores at a .05 level of significance. State the hypothesis, value of the test statistic, and the decision to retain or reject the null hypothesis. b. Compute effect size using estimated Cohen's d. An academic tutor wants to assess whether her remedial tutoring has been effective for her five students. Using a pre-post design, she records the following grades for a group of students prior to and after receiving her tutoring. Tutoring Before After 2.4 3.0 2.5 2.8 3.0 3.5 2.9 3.1 2.7 3.5 a. Test whether or not her tutoring is effective at a .05 level of significance. the hypothesis, value of the test statistic, and the decision to retain or reject the null hypothesis b. Compute effect size using estimated Cohen's d