Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02836 -0.02835 -0.01389 -0.00389  0.57023 

Coefficients:
            Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.02836    0.00280  10.129 < 0.0000000000000002 ***
xYes        -0.02425    0.00527  -4.603           0.00000494 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0633 on 710 degrees of freedom
Multiple R-squared:  0.02897,	Adjusted R-squared:  0.0276 
F-statistic: 21.18 on 1 and 710 DF,  p-value: 0.000004944