If you reject H0 in a one-factor within-subjects analysis of variance, then you conclude that the.
A)variances of each treatment condition are equal
B)variances of each treatment condition are not equal
C)treatment means differ only because of sampling error
D)treatment means differ by more than chance alone

Question

Quizplus · Accepted Answer

If you reject H0 in a one-factor within-subjects ANOVA, it means that there is a significant difference between at least two treatment conditions. This difference cannot be explained by chance or random variability. Therefore, the correct answer is that the treatment means differ by more than chance alone (option D). Options A and B are incorrect because the equal variances assumption applies to between-subjects ANOVA, not within-subjects ANOVA. Option C is incorrect because it implies that the differences between treatment means could be due to chance or sampling error, which is not the case if H0 is rejected.

If You Reject H0 in a One-Factor Within-Subjects Analysis of Variance