a. Obtain a correlation matrix. Which independent variable has the strongest correlation with the dependent variable? b. Run the regression with two independent variables only (Years and Rating). Interpret the results: (i) regression coefficients, (ii) R2, (iii) ANOVA table. Use th 5% level of significance. C. Run the above regression including the dummy variable, Masters. Interpret the regression coefficients of Masters. b. Run the above regression (c) including an interaction term (Years x Rating). Interpret the regression coefficients of the interaction term