28 The regression analysis below relates US annual energy co

28. 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?

Solution

Both independent variables.

because both variables are relationship with the other variable