5. (25 points) Which subject measures to overall satisfaction? 1) (8 points) Fit simple linear regression models using Im(). 2) (7 points) Interpret the slope of each model. 3) (10 points) Complete the table below. Then, choose the best model. Model | Predictor | Coefficien Residual R-square F-stat Hypothesis Test 5 5 ts Standard ( R? ) H : 3,=0 Error Rides 1.70 12.88 .343 260.4% Reject H Significant linear relationship with overall satisfaction Games Wait Clean 6. (7 points) Extend the model by including all the variables. 1) (2 points) Fit a multiple regression model using Im(). 2) (5 points) Interpret the significance slope of the model 7. (4 points) Using the results on Quesiton 5 and 6, choose the best model. Explain why it is the best. 8. (8 points) Before accepting you best model as usuable, it is essential to validate that the regression assumptions are satisfied in respect to the fitted model. Using the plot() and gvlma(), check the assumptions. Assumption What is the assumption? Diagnostic plot name you used Linearity Normality Independence Equal variance