Please answer parts c) d) e) in legible writing, thanks. A consumer advocacy gro
ID: 3375198 • Letter: P
Question
Please answer parts c) d) e) in legible writing, thanks.
A consumer advocacy group was interested in the cost of hiring a removalist and how that related to the distance from source to destination. A random sample of removalist jobs was obtained, with the costs and distances summarised below Plot of the data ? Scatterplot of Cost vs Distanoe Numeric summary of the data n32 Sxy = 3866874.50 1200 Distance (km) = 642.97 5x = 350.7 Sx 3812895 y= 120794 Sy 462.9 Syy 6642480 Residual Plots for Cost SSReg-3921618 SSErr 2720862 Normal Probability Plt Versus Fits Diagnostic plots of the residuals> Some Minitab output Regression Analysis: Cost versus Distance The regression equation is Cost 556 + 1.01 Distance Predictor Constant Coef SE Coef 555.9 112.6 4.94 0.000 Distance 1.0142 0.1542 0.000 S 301.157 R-Sq 59.0% R-Sq (adj ) -57.7% -Explanation / Answer
C)
Intercept is interpreted as average price of dependent variable when independent variable=0
Hence this is the cost when distance is 0
Hence it can considered as truck loading /unloading fee
D)
Difference in the cost =slope *difference in distance
=1.0142*(300-200)
=101.42
E) this is given by 1-R^2
=1-0.59
=0.41