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Hypothesis Tests
A statistical hypothesis test is a method for making decisions using data from an experiment, survey, or an observational study, deciding whether the evidence is sufficient to reject the status quo as described by the null hypothesis. The lessons in this unit focus on developing understanding of central inferential concepts. Students generate random samples, set up hypotheses tests and examine the meaning of p-values and alpha levels, Type I and II errors and their connection to power. They also investigate several different tests and when they are applicable.