TABLE 3-DDD ESTIMATES OF THE IMPACT OF STATE MANDATES ON HOURLY WAGES Before law After law Time difference Location/ year change change for location A. Treatment Individuals Married Women, 20-40 Years Cha. Experimental states 1.547 1.$13 -0,034 (0.012) (0.012) (0.017) [1,400] [1,496] Nonexperimental states 1.369 1.397 0.028 (0.010 (0.010) (0.014) [1,640] Location difference at a point in time: 0.178 0.11 (0.016) (0.015) Difference-in-difference: -0.062 (0 032) B. Control Group: Quer 40 and Single Males 20-40- Experimental states 1,759 1.748 -0.011 (0.007) (0.007) (0.010) (5,624] [5,407] Nonexperimental states 1.630 1.627 -0.003 (0,D07) (0.007) (0.010) 14,959] (4,928] Location difference at a point in time: 0.120 0.121 (0.010) (0.010) Difference-in-difference: -01008: (0 014) DDD: -0.054 (0 026) 4. Consider Gruber's empirical analysis of the effect of state legislation requiring that firms include costs associated with pregnancy and childbirth in employer-provided health insurance policies on the hourly wages of women of child-bearing age. Are his estimates consistent with what theory predicts? Explain with reference to carefully labelled diagram(s)