The Formula Used to Construct Approximately $100 ( 1 - \alpha ) \%$

The formula used to construct approximately $100 ( 1 - \alpha ) \%$ confidence interval for a population proportion p when the sample size n is large enough $( n p \geq 10 \text { and } n ( 1 - p ) \geq 10 )$ is given by __________, where $\hat { p }$ is the sample proportion, and $\hat { q } = 1 - \hat { p }$