Researchers who examined the effects of administering hot chocolate during an exam at various times of day reported the following statement in their paper:
We used a 2 (condition: chocolate vs. no chocolate) x 2 (time: morning vs. afternoon) fully between subjects ANOVA to analyze our data on exam score. We found a significant main effect of our condition variable (F(1,83) = 12.15, p

Question

Researchers who examined the effects of administering hot chocolate during an exam at various times of day reported the following statement in their paper:
We used a 2 (condition: chocolate vs. no chocolate) x 2 (time: morning vs. afternoon) fully between subjects ANOVA to analyze our data on exam score. We found a significant main effect of our condition variable (F(1,83) = 12.15, p < .05) but no main effect of time. We also found a significant interaction, F(1, 83) = 15.89, p < .05.
Which of the following pieces of information do you know must be true?

Quizplus · Accepted Answer

The study used a 2x2 fully between-subjects design, meaning participants were assigned to one of four conditions: chocolate in the morning, no chocolate in the morning, chocolate in the afternoon, or no chocolate in the afternoon.

Researchers Who Examined the Effects of Administering Hot Chocolate During