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D Question 5 1 pts What type of variability is in the numerator of an F-test? between-group variability, which reflects any real differences among the groups O between-group variability, which reflects error and random variations O within-group variability, which reflects any real differences among the groups O within-group variability, which reflects error and random variations Previous NextD Question 6 1 pts In terms of the directionality of the null hypothesis tested, ANOVA involves . . . O a non-directional null hypothesis. O a directional null hypothesis. O either a directional or a non-directional null hypothesis, depending on the research question. O There is no null hypothesis in an ANOVA. Previous NextD Question 7 1 pts A statistically significant value for F allows the rejection of the null hypothesis, indicating at least some difference(s) among some of the group means. To identify which pair(s) of group means are significantly different from one another, researchers . . . O run multiple t-tests. O compute a correlation coefficient. O conduct a post hoc test. Previous Next