15 Table 13.20 shows results of fitting a regression model to data from 1969 on salaries (in dollars) of about 35.000 college professors. Four predictors are qualitative (binary), with dummy vanable defined in parentheses The table shows estimates of parameters for each predictor, with standard enors in parentheses. Write a short report. interpreting the elfects of the predictors.

TABLE 13.20 Variable Estimate (Sid. Enor) Years of Experience 1627 (2.0) Terminal degree 264.0 (Ph.D.= 1) (40.1) Degree quality 616.8 (345) Research productivity 6165 (77) Marital status 850.3 (married = 1) (51.2) Race -3103 (nonwhite = 1) (1070) Gender -1863.7 (female = 1) (62.1) Intercept 10.033.2 Somce N. Langton and J Pfeffer, American Sociolog. ical Review, Vol. 59 (1994), p. 236.