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10.1 An Introduction to Inference for One Variance (Assuming a Normally Distributed Population)

I discuss confidence intervals and hypothesis tests for a variance when sampling from a normally distributed population. I discuss the logic behind the procedures, discuss some characteristics of the sampling distribution of the sample variance, and give the appropriate formulas. I briefly discuss the results for an example problem, but I don’t work through any of the calculations in this video. (I have another video in which I work through a complete example.)

The fat content in deep fried chicken sandwiches is based on information from the USDA Nutrient Database.