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In the context of the independent t-test, what is the distribution of differences between means? Know how to draw the distribution of differences between means

In the context of the independent t-test, what is the distribution of differences between means? Know how to draw the distribution of differences between means and be able to describe what it tells us when we perform hypothesis testing with independent sample t-tests. What does the standard error (sdif ) mean in the context of an independent group t-test

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