The majority of mississippi would agree with what statement? a. slavery should be abolished b. slavery is not important to the economy c the white race should have to work just as hard as the black race d slavery is important to commerce and only blacks should work

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?