a. Tom designed a complete factorial experiment with 2 factors.One factor had 4 levels, the other had 5 levels. For eachcombination of levels of factors, there were 6 replicates. In theANOVA table associated with this design, what were the degrees offreedom of the interaction?
a. 7, b. 12, Â Â c. 20, d. 24, e. 30.
b. In the above ANOVA table of the complete factorialexperiment, suppose we want to test the significance of themain effect of the factor with 4 levels. What is the distributionwe use to calculate p-values?            Â
a. F(3, 100), b. F (4, 120),   c. F (4, 100), d. F (5, 100),e. F (5, 120).
