\[\begin{array}{rcl}SE(\hat{p}_1-\hat{p}_2) & = & \sqrt{\hat{p}_{pool}(1-\hat{p}_{pool})\left(\frac{1}{n_1}+\frac{1}{n_2}\right)}\end{array}\]
\[Z = \frac{\hat{p}_1-\hat{p}_2}{SE(\hat{p}_1-\hat{p}_2)}\]
\[\hat{p}_1-\hat{p}_2 \pm z^*\cdot SE\]
\[T = \frac{\bar{x}-null}{s/\sqrt{n}}\]
\[\bar{x} \pm t_{df}^*\cdot \frac{s}{\sqrt{n}}\]