A regression line is used to satisfactorily describe the relationship between amount of car surface per square inch and drying time (in minutes) of 24 cars in a car wax drying time study. The regression analysis is shown. Variable Coeff SE Coeff t Ratio p-Value Constant 4.5893 0.2784 16.49 0.0023 Amount of car surface 5.8493 0.3827 15.30 0.0045 R squared = 89.1% R squared (adj) = 90.1% Which expression should be used to compute a 96 percent confidence interval for the slope of the regression line? 5.8493 ± 2.172(0.3827) 5.8493 ± 2.183(0.3827) 5.8493 ± 2.177(0.3827) 4.5893 ± 2.183(0.2784) 4.5893 ± 2.177(0.2784)