Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.028848 -0.025653 -0.009518  0.010428  0.301764 

Coefficients:
             Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.028849   0.001527  18.888 < 0.0000000000000002 ***
xYes        -0.015543   0.002875  -5.407         0.0000000877 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03453 on 710 degrees of freedom
Multiple R-squared:  0.03955,	Adjusted R-squared:  0.03819 
F-statistic: 29.23 on 1 and 710 DF,  p-value: 0.0000000877