A researcher conducts an independent-measures, two-factor study using a separate sample of n = 15 participants in

Question:

A researcher conducts an independent-measures, two-factor study using a separate sample of n = 15 participants in each treatment condition. The results are evaluated using an ANOVA and the researcher reports an F-ratio with df = 1, 84 for factor A, and an F-ratio with df = 2, 84 for factor B.
a. How many levels of factor A were used in the study?
b. How many levels of factor B were used in the study?
c. What are the df values for the F-ratio evaluating the interaction?