1. (9 pts) Consider the following economic model describing workers' earnings: In(wage) = Bo + Beduc + Bztenure + Bzblack + Batenure? + Bseduc. black + Botenure black With all the variables described as follows: In(wage) = natural log of monthly earnings; educ = years of education; tenure = years with current employer; black = 1 if black and 0 if not; tenure? = tenure*tenure educ.black is an interaction variable equal to educ*black; tenure,black is an interaction variable equal to tenure *black. From the model above, answer the following questions: a. Determine what the return to each additional year of education: i) for black workers, and ii) for non- black workers. (2pts) b. Provide an interpretation for the coefficient associated to the variable educ.black (pt) c. Determine what is the effect of each additional year with current employer: i) for a black worker; ii) for a non-black worker. (2pts) d. For workers with the same number of tenure years and number of years of education, determine the difference in log(wage) between black and non-black workers. (1 pt) e. If . > 0, then does the caming gap between black and non-black workers get larger for more educated workers or for less educated workers? (2pts) f. Provide a correct interpretation for the coefficient of the variable black. (Ipt)