Erkal, Copur, Dogan, and Safak (2007) studied how sex and sex roles influence the time parents spend with their children. In their study, they asked a sample of parents to report the amount of time they make accessible for their children. Women reported spending an average of 9.48 hours per week; men reported spending an average of 8.01 hours per week. The F table summarizes the results of their study.

(a) Is a significant main effect or interaction evident in this study and, if so, for which factor?
(b) Referring to the group means given for sex, state the conclusion for this study.

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Source of sS Variation Sex Sex Roles Sex x Sex f MS F 191.93 1 191.93 9.34 11.90 3 3.97 0.19 87.61 3 29.20 1.42 Roles Error Total 12,163.98 592 20.55 12,455.42 599