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Section 13.2 Summary of Comparing Two Population Proportions
Parameter: \(\pi_1 - \pi_2\) = the difference in the population proportions of success
To test \(H_0\!:\pi_1 - \pi_2 = 0\)
Approximate (100 × C)% Confidence interval for \(\pi_1 - \pi_2\text{:}\)
Note: We can simplify the technical conditions by verifying that you have independent random samples from two processes or large populations (or one random sample classified by a binary variable) and at least 5 successes and 5 failures in each group.
Technology: To perform the calculations for these two-sample
z -procedures you can use
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