Numerical simulation

Similar to before, figure 5 shows the expected percentage increase in $Z$-score for the heteroscedastic vs. the homoscedastic model. Again, depending on the explicit configurations of first-level variances, a substantial increase in $Z$-score can be observed.

Figure 5: Expected % increase in $Z$-score for the paired $t$-test at different group sizes (N=6, 12 and 30). Boxplots show the standard deviation of the paired differences.