Question

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

 Dep.= Mileage Indep.= Cylinders SUMMARY OUTPUT Regression Statistics Multiple R R Square Adjusted R Square Standard Error Observations 7.0000 ANOVA Significance df SS MS F F Regression 12.4926 Residual Total 169.4286 Standard Coefficients Error t Stat P-value Lower 95% Upper 95% Intercept 38.7857 Cylinders -2.7500 SE CI CI PI PI Predicted Predicted Lower Upper Lower Upper x0 Value Value 95% 95% 95% 95% 4.0000 1.9507 6.0000 1.1763

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

What is the 95% confidence interval for the mean gas mileage of 6 cylinder cars (without units)?

 a. (19.4073, 25.1641) b. (20.5495, 24.0219) c. (19.9155, 24.6559) d. None of the answers is correct e. (19.2614, 25.3100) Thanks!

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