A sample of 61 model-2013 cars from an online information service was examined to see how fuel efficiency (as highway mpg) relates to the cost (Manufacturer€™s Suggested Retail Price in dollars) of cars. Here are displays and computer output:

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.

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50 45 40 35 30 25 25000 35000 MSRP Dependent variable is: Highway MPG R-squared 10.36% s 4.870 with 61 2- 59 degrees of freedom Variable Coefficient SE(Coeff) t Ratio P-Value Intercept 45.6898 MSRP 4.849 9.42 <0.0001 2.61 0.0114 -0.000416 0.000159 2 15 10 30 35 Highway Predicted