The Sampling Distribution of the Difference in Sample Means (X_1 bar - X_2 bar)
I discuss the characteristics of the sampling distribution of the difference in sample means (X_1 bar - X_2 bar). I then work through an example of a probability calculation that involves these concepts. The values for male and female heights are based on information in the 2009-2011 Canadian Health Measures Survey.
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The Sampling Distribution of the Sample Variance
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