Question

# Dep.= Mileage Indep.= Length SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard...

 Dep.= Mileage Indep.= Length SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations 7.0000 ANOVA Significance df SS MS F F Regression 6.1135 Residual Total 169.4286 Standard Coefficients Error t Stat P-value Lower 95% Upper 95% Intercept 80.0094 Length -0.3047 SE CI CI PI PI Predicted Predicted Lower Upper Lower Upper x0 Value Value 95% 95% 95% 95% 175.0000 2.3108 210.0000 2.9335

Is there a relationship between a car's gas MILEAGE (in miles/gallon) and its LENGTH (in inches)? Use the excel output above to answer the following question.

What is the 90% confidence interval for the mean gas mileage of cars that are 210 inches in length (without units)?

 a. (10.3226, 21.7222) b. None of the answers is correct c. (11.6926, 20.3522) d. (10.1114, 21.9334) e. (8.4804, 23.5644)

There is No relationship between the cars milage in gallons OR in milea and it's length.because the mileage and the length are very different parameters to each other they are not related to the each other. Therefore there is No relationship between them.

The 90% confidence interval is : None of the Answer is correct .

Because in our output above the lower confidence interval and upper confidence interval is 95% so here we can not assume the 90% confidence interval.

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