TRUE OR FALSE

24. Because of the paired design of the data, the null hypothesis of a paired t-test is usually expressed in terms of the mean difference.

25. If the data distribution is symmetrical, one-sample t-test can still be used with caution even if the data is not normally distributed.

26. To determine the appropriate minimum sample size for a one-sample t-test, you will need the effect size, or what we call the additive value between the observed and theoretical mean.

27. When ANOVA tests the null hypothesis the means are homogeneous, the among-group mean square and within-group mean square are both estimates of the within-group parametric variance.

28. Correlation finds the line that best fits the data points.

29. A 2-way ANOVA with replication tests only the null hypotheses that the means of observations grouped by one factor are the same.

30. Two-sample t-test is mathematically identical to a 1-way ANOVA on data with two groups.