Hypothesis test for difference in proportionsConstructing hypotheses for two proportionsHypothesis test for difference in proportions exampleComparing P value to significance level for test involving difference of proportionsConfidence interval for hypothesis test for difference in proportions
AP Stats: DAT (BI), DAT‑3 (EU), DAT‑3.H (LO), DAT‑3.H.1 (EK), DAT‑3.H.2 (EK), UNC (BI), UNC‑4 (EU), UNC‑4.AA (LO), UNC‑4.AA.1 (LO)
Hypotheses for a two-sample t testExample of hypotheses for paired and two-sample t testsTwo-sample t test for difference of meansConclusion for a two-sample t test using a P-valueConclusion for a two-sample t test using a confidence interval
If a poll from one location shows 55% of voters support a measure, but a poll from another location shows 45% support, does that mean there is a difference between the two populations? We can make a confidence interval to estimate the difference, or do a significance test to see if the difference is significant. We'll use similar methods to compare the means of two groups.
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