_____ were used in many southern states to limit the participation of African Americans in elections

Public policies affect private policies

Indicate whether the statement is true or false.

In a randomized 2 X 2 factorial design, we test for main effects by

A) comparing mean scores for the matrix of cells. B) comparing mean scores of the various levels of each factor. C) comparing the raw scores of each participant. D) finding the mean scores for the entire sample.