2 Proportions
The 2 Proportions conducts a hypothesis test of the difference between two proportions and calculates a confidence interval.
Test | Null Hypothesis, H0 | Alternate Hypothesis, H1 |
One-tailed | p1 - p2 = p0 | p1 - p2 < p0 or p1 - p2 > p0 |
Two-tailed | p1 - p2 = p0 | p1 - p2 ≠ p0 |
where p1 and p2 are the proportions of success in populations 1 and 2 respectively, and p0 is the hypothesized difference between the two proportions.