The sampling distribution of the difference between two sample proportions is approximately normal whenever n $\ge$ 30.

Question

Quizplus · Accepted Answer

The sampling distribution of the difference between two sample proportions is approximately normal when both groups involved in the comparison meet the success-failure condition, which requires that both $np \geq 10$ and $n(1-p) \geq 10$, where $n$ is the sample size and $p$ is the proportion of successes.

The Sampling Distribution of the Difference Between Two Sample Proportions ≥\ge≥

The Sampling Distribution of the Difference Between Two Sample Proportions $\ge$