(a) Develop a scatter diagram for these data, treating average distance traveled as the dependent variable. (b) Does a simple linear regression model appear to be appropriate? Explain. No, the scatter diagram suggests that there is no relationship. Yes, the scatter diagram suggests that there is a linear relationship. No, the scatter diagram suggests that there is a curvilinear relationship. (c) Develop an estimated regression equation for the data corresponding to a second-order model with one predictor variable. (Round your numerical values to four decimal places.) y^=