As an experiment she randomly selected 15 students and randomly assigned them to one of three groups which include either a PowerPoint presentation created by the faculty, AuthorGen Presentation created by the faculty, or a well known tutorial by the ABC company. After completing their assigned tutorial, the students are given a Business Ethics test. At the .01 significance level, can she conclude that there is a difference between how well the different tutorials work for the students?

Question

Students Grades on the Business Ethics Test following the Tutorial


PowerPoint Tutorial AuthorGen Tutorial ABC Tutorial
98 79 65
85 86 73
91 72 78
87 82 66
98 91 71