Major: Grade Point Average Does a college grade point average (GPA) depend on a person’s major?

Does it depend on a person’s academic year? In a study, the following GPA data were obtained for random samples of college students in each of the cells.

Major Academic Year 1st Year 2nd Year 3rd Year 4th Year Biology 2.8 2.1 2.5 2.3 3.1 2.9 3.8 3.6 2.7 3.0 2.9 3.5 3.2 3.8 3.5 3.1 Business 2.3 2.9 2.6 2.4 2.6 3.6 3.2 3.5 3.5 3.9 3.3 3.6 3.3 3.7 3.8 3.6

(a) List the factors and the number of levels of each factor.

(b) Use two-way ANOVA and the following Minitab printout to determine if there is any evidence of interaction between the two factors at a level of significance of 0.05.

(c) If there is no evidence of interaction, use two-way ANOVA and the Minitab printout to determine if there is a difference in mean GPA based on class.
Use a 5 0.05.

(d) If there is no evidence of interaction, use two-way ANOVA and the Minitab printout to determine if there is a difference in mean GPA based on major.
Use a 5 0.05.AppendixLO1