Use the scatterplot in Figure 4.51 and the summary statistics given in Table 4.24, for a bivariate random sample of ???? = 150 observations, to answer the following questions.

(a) Based on the scatterplot in Figure 4.51, is it reasonable to believe there is a linear relationship between the variables ???? and ????? Explain.

(b) If the sample correlation coefficient between ???? and ???? is ???? = −0.96, determine the equation of the least squares regression line.