The Food and Drug Administration (FDA) just announced yesterday that they would approve a new cancer-fighting drug from King. You observe that King had an abnormal return of 0% yesterday. This suggests that

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?