A researcher analyzes the relationship between amusement park attendance and the price of Data was collected for 30 professional tennis players regarding their performance in Grand Slams (the four major tennis tournaments in the world). The response variable Win, expressed as a proportion ranging from 0 to 1, is believed to depend on two explanatory variables: the percentage of the Double Faults and the number of Aces. The following model is estimated: Win = ?0 + ?1DoubleFaults + ?2Aces + ?. A portion of the regression results is shown in the accompanying table.

a. Predict the winning percentage for a player who had 20 double faults and five aces. b. Interpret the slope coefficient for the variable DoubleFaults. c. Calculate the standard error of the estimate. d. Calculate and interpret the coefficient of determination. Also, how much variation is unexplained?

22) (9 points) A researcher analyzes the relationship between amusement park attendance and the price of Data was collected for 30 professional tennis players regarding their performance in Grand Slams (the four major tennis tournaments in the world). The response variable Win, expressed as a proportion ranging from 0 to 1, is believed to depend on two explanatory variables: the percentage of the Double Faults and the number of Aces. The following model is estimated: Win = Bo + 1DoubleFaults + B2Aces + E. A portion of the regression results is shown in the accompanying table. df SS MS F Regression 2 1.24 0.620 41.85 Residual 27 0.40 0.015 Total 29 1.64 Coefficients Standard Error t-stat p-value Intercept 0.451 0.080 5.646 5.4E-06 Double Faults -0.007 0.0024 -2.875 0.0078 Aces 0.015 0.003 4.65 7.8E-05 a. Predict the winning percentage for a player who had 20 double faults and five aces. b. Interpret the slope coefficient for the variable DoubleFaults. c. Calculate the standard error of the estimate. d. Calculate and interpret the coefficient of determination. Also, how much variation is unexplained