In a two-factor experiment with two levels of factor A and 2 levels of factor B, three of the treatment means are essentially identical and one is substantially different from the others. What result(s) would be produced by this pattern of treatment means?
a. a main effect for factor A only
b. a main effect for factor B only
c. an interaction between A and B
d. main effects for both A and B, and an interaction
Question 2
_______________ or imitation of treatment occurs when a comparison group learns about the program either directly or indirectly from program group participants.
Fill in the blank(s) with correct word
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