A researcher conducts two studies on child health.In Study 1,30 children consume either a low-,moderate-,or high-fat meal (n = 10 per group).In Study 2,the researcher conducts the same study,except that a No Meal control group is added,with n = 10 in each group.If F_obt = 3.11 in both studies,then in which study will the decision be to reject the null hypothesis at a .05 level of significance for a one-way between-subjects ANOVA? A) Study 1 B) Study 2 C) both D) none

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Study 2 has more groups, increasing the degrees of freedom for the between-group variance, which can lead to a lower critical F-value, making it more likely to reject the null hypothesis.

A Researcher Conducts Two Studies on Child Health