Reaction time is measured after a weight lifting exercise for six different groups. Factor A was the amount of the weights lifted (5, 10, or 15 pounds). Factor B was age group (teenager or adult). The researchers found that the reaction time for the different age groups did not depend on the amount of weights lifted. Based on this information, the researchers can conclude that
A) Factor A was not significant.
B) Factor B was not significant.
C) There was no interaction between Factors A and B.
D) All of the above are true.

Question

Quizplus · Accepted Answer

The statement that reaction time for different age groups did not depend on the amount of weights lifted indicates that there was no interaction between the amount of weight lifted (Factor A) and the age group (Factor B). This means the effect of one factor does not change across the levels of the other factor, which is the definition of no interaction.

Reaction Time Is Measured After a Weight Lifting Exercise for Six