For a two-factor research study with three levels for factor A and two levels for factor B, how many participants are needed to obtain five scores in each treatment condition for each of the following...

For a two-factor research study with three levels for factor A and two levels for factor B, how many participants are needed to obtain five scores in each treatment condition for each of the following situations?

a. Both factors are between-subjects.

b. Both factors are within-subjects.

c. Factor A is a between-subjects factor and factor B is a within-subjects factor.