Exercise 7.6 Analyze the following data as a two-factor ANOVA where the subscripts i and j indicate the two factors.

yi jks i 1 2 3 j 1 1.620 2.228 2.999 1.669 3.219 1.615 1.155 4.080 2.182 3.545 2 1.342 3.762 2.939 0.687 4.207 2.245 2.000 2.741 1.527 1.068 0.809 2.233 1.942 2.664 1.002 The dependent variable is again a mathematics ineptitude score and the levels of the first factor identify the same three majors as in Exercise 7.5. In these data, the second factor identifies whether the student is lefthanded (1) or righthanded (2).