10 min read
This study guide covers two-proportion z-tests for comparing two population proportions. It explains hypotheses (null and alternative), parameters, and the necessary conditions for inference (random, independent, normal). It details the pooled proportion calculation, the large counts condition, calculating the test statistic and p-value, and interpreting results in context. Practice questions and an answer key are included.
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Question 1 of 11
What is the null hypothesis () typically assumed to be in a two-proportion z-test? 🤔