10 points eBook Print References seaboard state. She has gathered the following data: m A A regional planner employed by a public university is studying the demographics of nine counties in the eastern region of an Atlantic I County Median Income $43, 157 48) 568 46, 816 34) 876 35; 4-78 341 4-65 35; 926 381 599 33; 315 HIGH-"munmp Median Age 57 . 69 . 47 . 38 . 42 . 35 . 39 . 65 . 27 . ommpwpwuu Coastal someway-Hi4 Click here for the Excel Data File a. Is there a linear relationship between the median income and median age? (Round your answer to 3 decimal places.) Check my work 8 b. Which variable is the "dependent" variable? O Median Age 10 Median Income points eBook c-1. Use regression analysis to determine the relationship between median income and median age. (Round your answer to the nearest whole number.) Print References Income = + Median AgeChapter 14 Homework Assignment i Saved Help Save & Exit Submit Check my work 8 c-2. Interpret the value of the slope in a simple regression equation. (Round your answer to the nearest whole number.) For each year in age, the income increases on average. 10 points eBook Print References d. Include the aspect that the county is "coastal" or not in a multiple linear regression analysis using a "dummy" variable. (Round your answers to the nearest whole number.) Income = Median Ane + ICoastalCheck my work 8 e. Test each of the individual coefficients to see if they are significant. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places.) Predictor p-value 10 Constant points Median Age Coastal eBook Print References f. Make a histogram of the residuals. Which plot is correct? Residual plot 1 Residual plot 2 Residual Residual plot Residual plot Residu Normal Normal 3.0 3.0 Mean 4.042206-12 3.0 Mean -4.04220E-12 StDev 02005 StDev 914.7 N 9 2.5 2.5 2.5Check my work 8 f. Make a histogram of the residuals. Which plot is correct? Residual plot 1 Residual plot 2 Residua. Residual plot Residual plot Residu Normal Normal 3.0 3.0 Mean -4.042206-12 3.0 Mean -4.04220E-12 StDev 02005 StDev 914.7 10 2.5 2.5 2.5 points 2.0 2.0 2.0 Frequency Frequency Frequency 1.5 1.5 1.5 eBook 1.0 1.0 1.0 0.5 0.5 Print 0.0 0.0 -0.4 -0.2 0.0 0.2 0.4 -2000 -1000 1000 2000 -2000 -1000 References Residual Residual Residual O Residual plot 1 O Residual plot 2 O Residual plot 3 g. Make a scatter diagram of the residual values versus the fitted values. Which plot is correct? Residuals vs Fits 1 Residuals vs Fits 2 ResidualsCheck my work 8 g. Make a scatter diagram of the residual values versus the fitted values. Which plot is correct? 10 Residuals vs Fits 1 Residuals vs Fits 2 Residuals points Residuals vs. Fits Residuals vs. Fits Residual OA 2000 3000 03 1500 2000 eBook 02 1000 01 Print 500 Residual Residual Residua 0D References TO -500 -02 -1000 -1000 -03 35000 40000 45000 50000 35000 40000 45000 50000 35000 37500 40000 FITS FITS O Residuals vs Fits 1 O Residuals vs Fits 2 O Residuals vs Fits 3