Tiana’s bakery sales cinnamon banana apple and blueberry muffins each day the bakery make 63 apple muffins the apple muffins represent 42% of all muffins baked each day how many muffins are baked each day

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?