Atwo-factor study with two levels of factor a and three levels of factor b uses

There are 30 participants are needed for the entire study.

Step-by-step explanation:

Since we have given that

Number of levels of factor A = 2

Number of levels of factor B = 3

Number of participants in each treatment condition = 5

So, the number of participants are needed for the entire study is given by

Hence, there are 30 participants are needed for the entire study.