- A 7 A Student At A Large University Suspects Mr Harsh Is Grading His Statistics Students Too Harshly The Student Det 1 (44.21 KiB) Viewed 19 times
a. 7. A student at a large university suspects Mr. Harsh is grading his statistics students too harshly. The student determines that over the past 2 years students in all sections of statistics (taught by other teachers) received grades of A, B, C, D, or F in the following proportions: A: 0.20; B: 0.30; C: 0.30;D: 0.10; and F: 0.10. The student then takes an SRS of 90 students who took statistics with Mr. Harsh in the past 2 years. The student performs the appropriate x procedure to test the hypothesis that the teacher's grade distribution is different from other teachers of introductory statistics. The computed value of the statistic for the reporter's test is 6.074. Which of the following is an appropriate conclusion using a = 0.05? Reject Ho. There is convincing evidence that the grade distribution of the new teacher is different from that of other teachers. b. Accept H. There is convincing evidence that the grade distribution of the new teacher is harsher than that of other teachers. Fail to reject Ho. There is not convincing evidence to conclude that the grade distribution of the new teacher is different from that of other teachers. d. Fail to reject H. There is convincing evidence that the grade distribution of the new teacher is less harsh than that of other teachers. Accept Ho. There is convincing evidence that the grade distribution of the new teacher is different from that of other teachers. C. e.