An Introduction to Inference for Two Proportions @jbstatistics

Uploaded May 2014 | Updated September 2026, 2 hours ago

I discuss the sampling distribution of the difference in sample proportions, and confidence intervals and hypothesis tests for the difference in population proportions (using large sample Z procedures based on the normal approximation).

The male birth rate data is from:
Koshy et al. (2010). Parental smoking and increased likelihood of female births. Annals of Human Biology, 37(6): 789-800.

An Introduction to Inference for Two Proportions

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An Introduction to the Normal Distribution

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