February 24 Blackboards

Example: small n, sigma unknown

Example continued

Example for a proportion

Example continued

Chi-squared tests for standard deviation can be two-tailed …

… or one-tailed.

I accidentally took a picture of the desk!

Example of a right-tailed test for standard deviation

Example continued

Example of a left-tailed test for standard deviation

Example continued

Using a confidence interval to test a hypothesis

Confidence interval example