8. An aviation researcher examined the effect of alcohol consumption on pilot perfor- mance. The study was conducted in a flight simulator and pilot performance was de- fined as the measure of deviation (in degrees) while following the glide slope on an instrument landing system. Deviations were recorded over a 20-second period both prior to and after pilots drank the prescribed amount of alcohol. Because of the po- tential influence age could have on the results, the researcher conducted a factorial design. Factor A = Blood Alcohol Content (BAC) had three levels: None (BAC = 0), Low (BAC = .05), and Moderate (BAC=11); and Factor B = Age had three levels: 25-34 years old, 35-44 years old, and 45 years old or older. The results of a factorial ANOVA were: R = .61, F(8,210) = 41.92, p < .0011, and the three respective null hypotheses were rejected. Which of the following statements represents an accurate interpretation of the results?

a. The interaction was disordinal.

b. The interaction was ordinal.

c. The interaction effect was not significant.

d. The interaction was significant.