Use the results in Problem 7 to answer the following questions.
a. Provide a numerical value for r2YX1|X2, X3.
b. Which two models should you compare in testing whether the correlation in part (a) is zero in the population?
c. Provide a numerical value for r2YX1.
d. What does the difference between parts (a) and (c) say about the relationships among the three predictor variables?
e. Which two models should you compare in testing whether the correlations in parts (a) and (c) differ in the population?