Power of a One-Sample t-Test
2020
This activity is based on an interactive online resource ( https://shiny-apps.stat.ubc.ca/FlexibleLearning/Power/ ) developed at the University of British Columbia. The goal of the activity is for students to develop an intuition about the power of a hypothesis test, as well as the relationship between power and significance level, effect size, and sample size, in the context of a one-sample, one-sided t -test. Students are prompted to set multiple values of the aforementioned settings and to anticipate how the power of the resulting test is affected, and finally to then observe this effect in the resource. The activity also includes a sample size calculation section and an applied exercise that show the students how all these concepts and their relationships can be used in practice to design a simple experiment.
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