A consumer advocacy group was interested in the cost of hiring a removalist and

Question

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 Plot of the data 3 Numeric summary of the data: n 32 y3866874.50 y= 1207.94 Sy 462.9 Sy 6642480 F 642.97 350.7 3812895 SSReg 3921618 SSErr = 2720862 Diagnostic plots of the residuals Some Minitab output Regression Analysis: Cost versus Distance The regression equation is Cost556 1.01 Distance Predictor Coef SE Coes Constant 555.9 Distance 1.0142 0.15420.000 112.6 4.94 0.000 S 301. 157 R-Sq 59.0% R-Sq(adj) -57.7% - -

Explanation / Answer

D) difference in cost= slope * difference in distance

=1.0142*(300-200)

=101.42

e)

Unexplained =1-r^2

=1-0.59

=0.41

=41%

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