1. The authors of the study claim that race was assigned randomly to the resumes. Is there any evidence of nonrandom assignment?

	Model 1	Model 2	Model 3
t	4.1147	-1.919	-0.30433
df	4711.6	2410.1	2459.7
P-value	3.943E-05	0.05511	0.7609
95 percent confidence interval	0.01677067 0.04729503	-0.0463976089 0.0005019727	-0.01931711 0.01412672
mean of x	0.09650924	0.0849835	0.06188119
mean of y	0.06447639	0.1079313	0.06447639