36 371 38 39 40 41 QUESTION 16 Post hoc comparisons in a two-factor between-subjects analysis of variance using the Tukey HSD test are used to compare simple effects if Fobs for the interaction is statistically significant if Fobs for the interaction is nonsignificant only if Fobs for the interaction and at least one main effect are statistically significant only if at least one main effect is statistically significant and Fobs for the interaction is nonsignificant QUESTION 17