2. [14 points] To determine the effects of attending lecture on final exam performance, you estimated a model relating final (the final exam score in point) to attendrate (the percent of lectures attended) with the following output: Model A final = Bo + B. -attendrate SUMMARY OUTPUT Regression Statistics Multiple R RSquare Adjusted R Square Standard Error Observations 0.14 0.02 0.02 4.67 680 ANOVA df F 13.56 Significance F 0.00 Regression Residual Total 1 678 679 SS MS 295.35 295.35 14766.60 21.78 15061.95 Intercept attendrate Coefficients Standard Error Stor P-value 22.73 0.88 -25.92 0.00 0.04 0.01 3.68 Lower 95% Upper 95% 21.01 24.45 0.02 0.06 0.00 (a) [2 points] Write the regression model using the variables and coefficients refer to the output. (Hint: rewrite model A finale = Bo + Battendrate, using result from excel) (c) [12 points) What is the null hypothesis and alternative hypothesis of the t-test for the coefficient of atndrte (8.)? What does the t-test result suggest? Interpret the coefficient on atndrte($.)