Confidence intervals for proportions

Understand and use the approximate confidence interval, (𝑝̂− 𝑧√𝑝̂(1−𝑝̂) 𝑛,  𝑝̂+ 𝑧√𝑝̂(1−𝑝̂) 𝑛), as an interval estimate for 𝑝, the population proportion, where 𝑧 is the appropriate quantile for the standard normal distribution.