Question: 4. ANOVA Test A professor had students in a large statistics class rate her performance as excellent, good, fair, or poor. A graduate student collected

4. ANOVA Test A professor had students in a large statistics class rate her performance as excellent, good, fair, or poor. A graduate student collected the ratings and assured the students that the professor would not receive them until after the course grades had been sent to the records office. The ratings (i. e. the treatment) a student gave the professor was matched with his/her course grade, which could range from 0 to 100. The sample information is reported below. Is there a difference in the mean score of the students in each of the four rating categories? Use 0.01 significance level Course Grade

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