A researcher conducts a 2-factor ANOVA on results of a study that examines effects of student's motivation (low vs. high) and teaching strategy (lecture vs. discussion) on test performance. What is...

A researcher conducts a 2-factor ANOVA on results of a study that examines effects of student's motivation (low vs. high) and teaching strategy (lecture vs. discussion) on test performance. What is the null hypothesis ,H0 to test the main effect of teaching strategy