How Are Significance Tests and Confidence Intervals Related?
A confidence interval can be used to tell us how confident we are that the true value of a parameter is contained within an interval. We know the p-value method and the critical value method can be used to test for statistical significance. But we can also determine the outcome of a significance test (or hypothesis test) with confidence intervals. In this video, we'll use the confidence interval method to determine statistical significance, and apply the method to an example.
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00:00 Intro
00:28 Confidence intervals
01:00 3 ways to determine statistical significance
01:34 Confidence interval for two-tailed hypothesis test
04:09 One-tailed vs two-tailed tests
05:18 Exercise
06:49 Common mistakes
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