Us gross domestic product gdp in trillions of dollars and, Ask an Expert

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The regression analysis below relates US annual energy consumption in trillions of BTUs to the independent variables "US Gross Domestic Product (GDP) in trillions of dollars" and "average gas mileage of all passenger cars in miles per gallon (mpg)." Which of the two independent variables is significant at the 0.01 level?

• GDP only.
• Average car gas mileage only.
• Both independent variables.
• Neither independent variable.

US Energy Consumption (in $trillions) vs. GDP (in $trillions) and Average Car Gas Mileage (in mpg)

Regression Statistics
Multiple R 0.9709
R2 0.9426
Adjusted R2 0.9359 F test Results
Standard Error 1,943 F value Signif. F
Observations 20 139.64 0.0000

Coefficients Std Error t Stat P-value
Intercept 63,672 9,749 6.53 0.0000
GDP ($trillions) 3,853 696 5.53 0.0000
Avg. car gas mileage (mpg) -70.50 697 -0.10 0.9206

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