Wk 5 - Practice: Wk 5 Exercises [due Day 5] i Saved Help Save & Exit Submit Check my work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion. Return to question 10 (b) Find the p-value for each coefficient, using 319 degrees of freedom. Using an a = .01, which predictor variable(s) are not significant predictors? (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 4 decimal places.) 3 points Answer is complete and correct. p-value SalePrice 0.0019 Sub-Zero Capacity 2DoorFzBot 0.5623 2DoorFz Top 1 DoorFz 1 DoorNoFz (c) By how much does the natural log of refrigerator price decrease from a two-door, side freezer model to a two-door, top freezer model? (Round your answer to 4 decimal places.) x Answer is complete but not entirely correct. The natural log of the price decreases by 0.3031 x Mc Wk 5 - Practice: Wk 5 Exercises [due Day 5] i Saved Help Save & Exit Submit Check my work mode : This shows what is correct or incorrect for the work you have completed so far. It does not indicate completion. Return to question 10 Refrigerator prices are affected by characteristics such as whether or not the refrigerator is on sale, whether or not it is listed as a Sub- Zero brand, the number of doors (one door or two doors), and the placement of the freezer compartment (top, side, or bottom). The table below shows the regression output from a regression model using the natural log of price as the dependent variable. The model 3 was developed by the Bureau of Labor Statistics. points Variable Coefficient Standard Error t Statistic Intercept 5 . 4841 0. 13081 41.92 Sale price 0. 0733 0. 0234 -3.13 Sub-Zero brand 1. 1196 0. 1462 7.66 Total capacity (in cubic feet) 0. 06956 0. 005351 13.00 Two-door, freezer on bottom 0. 04657 0. 08085 0. 58 Two-door, side freezer Base Two-door, freezer on top 0. 3432 0. 03596 -9.55 One door with freezer -0. 7096 0. 1310 -5.42 One door, no freezer -0. 8820 0. 1491 - 5.92 (a) Write the regression model, being careful to exclude the base indicator variable. (Negative amounts should be indicated by a minus sign. Round your answers to 4 decimal places.) & Answer is complete but not entirely correct. In(Price) = 5.2700 * + 0.0740 * SalePrice + 1.2056 * Sub-Zero + 0.0759 * Capacity + 0.0535 x 2DoorFzBot + 0.3031 x 2DoorFz Top + 0.7693 x 1DoorFz + 0.8381 x (b) Find the p-value for each coefficient, using 319 degrees of freedom. Using an a = .01, which predictor variable(s) are not significant predictors? (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 4 decimal places.) Answer is complete and correct. p-value Mc Graw