A sample of 12 cars was taken, and the horsepower to miles per gallon was recorded. The computer output for regression is below: Table with columns labeled coefficients, standard error, t stat, p-value. Rows labeled intercept and horsepower. Data in intercept row is 46.91600662, 6.27668196, 7.474667, 2.12377 E to the negative 5 power. Data in the horsepower row is negative 0.200757246, 0.07051433, negative 2.84595, 0.017370344. What is the equation of the regression line? y hat equals 0.07 plus 6.28 times x y hat equals 7.47 minus 2.85 times x y hat equals negative 0.20 plus 46.92 times x y hat equals 46.92 minus 0.20 times x