24. 4 study of the relationship between student's high school GPA and mother's employment (yes, no) suspects an interaction with gender of student. Controlling gender of student, Table 10.13 contains the mean GPA for each combination of gender and mother's em- ployment.

a) Describe the relationship between mother's employment and GPA for females and for males Does this sample slow evidence of statistical interaction? Explain.

b) A journal article written about the study states, "Having a mother who is employed out- side the home seems to have positive effects on daughter's achievement in high school, but no substantive effect on son's achievement" Explain how Table 10.13 suggests this interpretation. TABLE 10.13 Gender Females Males Mother Employed Mother Not Employed 2.94 2.72 271 2.74 Concepts and Applications