A regression of average weekly earnings (AWE, measured in dollars) on age (measured in years) using a random sample of college-educated full-time workers aged 25-65 yields the following: The coefficient AWE=703.6670 +9.6960 Age, R2 = 0.023, SER = 630.3. shows the marginal effect of Age on AWE; that is, AWE is expected to increase by $ for each additional year of age. is the intercept of the regression line. It determines the overall level of the line. (Round your responses to four decimal places.)