=+s = 4,870 with 61 - 2 = 59 degrees of freedom Variable Coefficient SE(Coeff) t-Ratio P-Value Intercept 45.6898 4.849 9.42 60.0001 MSRP -0.000416 0.000159 -2.61 0.0114 M15_SHAR8696_03_SE_C15.indd 537 14/07/14 7:30 AM 538 CHAPTER 15 Inference for Regression 25 0

5 10 15 Highway Residual 30 35 Highway Predicted

a) State what you want to know, identify the variables, and give the appropriate hypotheses.

b) Check the assumptions and conditions.

c) If the conditions are met, complete the analysis.