Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03920 -0.03919 -0.02925 -0.00532  0.67648 

Coefficients:
            Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.03920    0.00425   9.223 < 0.0000000000000002 ***
xYes        -0.03131    0.00800  -3.914            0.0000996 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.09608 on 710 degrees of freedom
Multiple R-squared:  0.02112,	Adjusted R-squared:  0.01974 
F-statistic: 15.32 on 1 and 710 DF,  p-value: 0.00009957