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Khan Academy
Khan Academy: Statistics: Hypothesis Test Comparing Population Proportions
Video demonstrates the steps of a hypothesis test involving comparing population proportions. It shows setting up the null and alternative hypotheses and the steps used to calculate a z-statistic for the difference of the proportions and...
Khan Academy
Khan Academy: Statistics: Hypothesis Test for Difference of Means
Video demonstration of setting up a hypothesis test and calculating whether the difference of sample means of an experiment falls within a 5% significance level and using that to determine whether to accept or reject the null hypothesis....