Question 26 Needs Grading The traffic2 table contains 108 monthly observations on automobile accidents, traffic laws, and some other variables for California from January 1981 through December 1989, CotaCC, represents the total number of traffic accidents in month [ in the state of California, and fataCC, represents the number of those accidents which were fatal, sunem_t$ is the unemployment rate. Delt law, is a binary variable indicating when (0 before/1 after) seat belts became required by law, and spdlaw, is a binary variable indicating when (0 before/1 after) the speed-limit was raised (increased) to 65 mph. Eq 1: totacc, = Bo+ Bjunem, + Bybeltlaw, + Byspdlaw, + er Eq 2: Atotacc, = Bo+ Bidunem, + Bybeltlaw, + B3spdlaw, + er Eq 3: pfatal, = Bo+ Bibeltlaw, + Baspdlaw, + er d. Using OLS, is the estimated coefficient on seat belt law significant in model 27 Using Newey-West? Why do you think this result is happening