Statistical problem assistance

Reference no: EM1397988

Professor Brunner had students in his Marketing class rate his performance as Excellent, Good, Fair, or Poor. A graduate student collected the ratings and assured the students that Professor Brunner would not receive them until after the course grades had been submitted. The rating (the treatment) a student gave the professor was matched with his/her course grade, which could range from 0 to 100. the data is as follows:

Excellent Good Fair Poor

94 75 70 68

90 68 73 70

85 77 76 72

80 83 78 65

88 80 74

68 65

Is there a difference in the mean scores of the students in each of the four rating categories at a 99% confidence level?

Reference no: EM1397988

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