When subjects are not randomly assigned, but rather come to the study as members of each condition a variable is being used.

Which of the following statements about working conditions in the 1920s is not accurate? a. "in general, wages fell during the 1920s." b. assembly lines were designed to speed up production and reduce the need for skilled labor. c. many skilled craftsmen lost jobs during the 1920s. d. some employers added benefits such as paid vacation and pensions.

How did republicans gain control of southern state governments during reconstruction

Thoreau’s actions in civil disobedience and the 1955 bus boycott are similar because both thoreau and the boycotters were