D Question 30 2 pts A multiple regression equation has the form y = 20 + 5x1 -13x2 + 0.5x3 . How many independent variables are contained in this model? 0 4 0 3 O 1 O 2 Next Previous Not saved Submit QuizQuestion 26 2 pts A government agency analyzed the relationship between number of bus stops per 10,000 residents (stops) and total number of miles driven by car in a county (miles). They estimate the model miles = BO + 1*stops and obtain the results below. If the number of bus stops per 10,000 residents increases by 1, what is the predicted increase in the number of miles driven? Coefficients Standard Error t Stat P-value Intercept 6.647919627 1.381520549 4.812031 5.0477E-05 Bus stops 5.987241494 0.049828746 120.1564 2.1974E-38 O 1.38 6.65 O 5.99 11.22 Next Previous Not saved Submit QuizD Question 28 2 pts A multiple regression equation has the form Y = 20 + 6X1 -13X2. If Xi increases by 2 units and X2 increases 2 units, what is expected change in Y? O -14 0 6 13 O -34