Susan is working on the design of a between-subjects study in which she has three levels of two different variables (a 3 x 3 factorial). if she has 20 subjects in each group, how many subjects will she need?

Brainliest to who answers! what will always cause a supply curve to shift to the left?

Restricting immigrants from entering a country may be based on what belief?  

Apex q: arturo wants to increase his political participation beyond voting in elections. which action would accomplish this? answers: a. paying taxes b. starting a community cleanup program c. getting a public library card d. canvassing for a political candidate