6. An engineer wanted to determine how the weight of a car affects gas mileage. The following data represent the weights of various cars and their gas mileages. Complete parts (a) through (d). Car Car weight (pounds) A 3600 Miles per Gallon B 3900 19 C 18 3000 D 25 3300 m 23 3100 22 a) Which variable is likely the explanatory variable and which is the response variable? explanatory variable response variable b) Draw a scatter diagram of the data. C) Determine the linear correlation coefficient between car weight and MPG. Write formula and answer with 2 decimal places d) Does a linear relation exist between the car weight and MPG? Write a good conclusion. e) Find the regression equation f) Predict the car MPG when weight is 3300 lbs. g) Find the residual for x = 3300 h ) Find the coefficient of determination