Question: Determining the critical value of F. For each of the following situations, state how large the F statistic needs to be for rejection of the null hypothesis at the 5% level. Sketch each distribution and indicate the region where you would reject.
(a) The main effect for the first factor in a 2 × 4 ANOVA with 3 observations per cell
(b) The interaction in a 4 × 4 ANOVA with 2 observations per cell
(c) The interaction in a 2 × 2 ANOVA with 51 observations per cell