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10.2 Inference for One Variance: An Example of a Confidence Interval and a Hypothesis Test

I work through an example of a confidence interval and a hypothesis test for a variance (using chi-square methods that are appropriate when sampling from a normally distributed population).

The cereal data is from a sample of 15 bags of cereal I collected and weighed.

I have a video introduction to these procedures available at: http://youtu.be/lyd4V8DFCjM