Post a null hypothesis that would use a t test statistical analysis.. Use the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.

Use the same situation for all three hypotheses. For example, in a recent study published by my research team, we looked at self-reported intent to comply with food recall messages presented using different media (Facebook, television news, etc.). You could look at this situation using simple t-tests, or introduce more variables using ANOVAs.