please help me to answer it.

Econ 107: Introductory Econometrics. Instructor: Saman Banafti 4 Extra Credit 12. (7 points) Consider the following population model in determining female labor supply in equa- tion (7) log(hours) = Bo + Blog(wage) + Breduc + Byage + Bamom_gt6 + 35mom_It6 + Bemom_gt6_It6 + u (7) The dataset contains the following variables for 428 working women from 1975 (both full-time and part-time): . hours are the annual number of hours worked . wage is hourly wage in dollars . educ is the years of schooling . age is age of the woman in years . mom_ gt6 is a dummy variable = 1 if the mother has at least one child 2 6 but F 0 . 3003 Residual 373 . 394826 421 . 886923577 R- squared 0 . 0686 Adj R-squared 0 . 0553 Total 400 . 877178 427 . 93882243 Root MSE 94177 lhours Coct. Sid. Err. P>Izl .= =[95%, Cont. Interval] Iwage 8307775 0675959 0 . 46 0. 649 -. 10209 1636451 educ -. 0384502 0214653 -1.79 0 . 074 -. 0806427 0037424 age -. 0083071 . 0070412 -1. 18 0.239 -. 0221474 -1.24 0055331 TOT_q16 -. 1409856 . 1132699 0. 214 -. 3636305 . 0816593 TOT_ !16 -. 6441856 .2910156 -2.21 0. 027 -1. 21621 . 1915325 -4.57 -. 0721609 -. 8744183 0. 080 -1. 250897 -. 4979392 _con5 1 7. 845748 4296327 18.26 0.080 7. 001255 8 . 69024 Page 8You will also need the following output, which uses the additional generated variable, created in Stata as: gen new_var = mom_1t6 + mom_gt6_1t6 regress thours twage educ age mom_gt6 mom_lt6 new_var Source SS df MS Number of obs 428 F (6, 421) 5 , 16 Model 27 . 4823516 4. 58039193 Prob > F 0. 0800 Residual 373 . 394826 421 . 886923577 R-squared 0 . 0686 Ad; R-squared . 0553 Total 400. 877178 427 . 93882243 ROOT MSE 94177 lhours Coct. Sid. Err. P>III [95% Cont. Interval] Iwag 0307775 0675959 0 . 46 0. 649 -. 10209 1636451 educ -. 0384502 0214653 -1. 79 0. 074 -. 0806427 0037424 age -. 0083071 0070412 -1. 18 0. 239 -. 0221474 0055331 TOT_q76 -. 1409856 1132699 -1.24 0 . 214 -. 3636305 . 0816593 .2302327 3023884 0. 76 0 . 447 -. 3641463 8246118 new_var . 8744183 . 1915325 -4.57 0. 000 -1. 250897 -. 4979392 _cons 7. 845748 .4296327 18. 26 0. 000 7. 001255 8. 69024 (a) (1 point) Who is our reference / benchmark group in equation (7)? (b) (1 point) Interpret B6 (c) (1 point) What is the proportionate difference in the number of hours worked between women with at least one child