2 A researcher examines whether scores on a Statistics final exam (0 points to 100 points) are influenced by whether background music is soft, loud, or absent. (Note: Assume the students have been successfully completing quizzes up to the final exam.)
A. What is the independent variable?
B. What type or category of independent variable is used?
C. What is the dependent variable?
D. How many levels are there for the independent variable?
E. What is the scale of measurement for the dependent variable?