1. A psychologist assigns teenagers to listen torap music or classical music, and then the psychologist studies the amount ofaggression displayed by those teenagers in a simulated conflict situation. Whatare the IV and the DV in this study?2. It is a population fact that men and women differ in height. Youdraw a random sample of men and a random sample of women, measure theirheights, and find that the average height of the men and women do not differ.Given that men’s and women’s heights really are different in their respectivepopulations, what type of error occurred in your study—Type 1 or Type 2?Explain your answer.3. There is no significant difference between male and femaleinfants in the age at which they first walk. A pediatrician reviews the age ofwalking for all infants in her practice and is surprised to find a significantdifference between males and females in the age at which they first walked.Given that this result is contrary to actual population fact, what type oferror did this study lead to—Type 1 or Type 2? Explain your answer.