When computing the confidence interval for the population proportion,the Student's t-distribution is used rather than the normal distribution.

Question

Quizplus · Accepted Answer

The normal distribution is used when the sample size is large (n>30) and the population standard deviation is known or the sample size is small (n<30) and the population distribution is normal. However, when the sample size is small and the population standard deviation is unknown, the t-distribution is used for computing the confidence interval for the population proportion.

When Computing the Confidence Interval for the Population Proportion,the Student's