Consider the following values for the dependent and independent variables:

x y x y 6 5 18 30 9 20 22 33 14 28 27 35

a. Develop a scatter plot of the data. Does the plot suggest a linear or nonlinear relationship between the dependent and independent variables?

b. Develop an estimated linear regression equation for the data. Is the relationship significant? Test at an a  0.05 level.

c. Develop a regression equation of the form yˆb0b1 ln(x). Does this equation provide a better fit to the data than that found in part b?