(1) For each of the following hypothetical research projects, indicate the dependent and independent variables, making sure to specify and define the levels of the independent variable. How many levels are there in each scenario? How many groups will be required in the study?

(A) You want to know if music can influence memory. Participants were given 25 words to memorize; some participants are asked to sit in a quiet room while doing so, other participants are asked to sit in a room where heavy-metal music is playing, while other participants sit in a room where classical music is playing. After twenty minutes, all participants are brought into a different room and are asked to finish a free recall and recognition test of the words they memorized.

(B)You want to know if color can influence performance on an exam. You have 30 statistics students. Ten of them write their exam in a pink classroom, a second group writes the exam in a blue classroom, and a third group writes the exam in a white classroom. The professor then measures accuracy on the exams.