Today our goal is to cover hypothesis testing and the basic z-test, as these are fundamental to understanding how the t-test works. We’ll return to the t-test soon — with real data.

Example of Hypothesis Testing If a researcher wants to test if a penny is fair, the null hypothesis would state that the probability of landing on heads is exactly 50%. The alternative hypothesis ...

Specialization: Data Science Foundations: Statistical Inference Instructor: Dr. Jem Corcoran, Associate Professor in Applied Mathematics Prior knowledge needed: Probability Theory: Foundation for Data ...

Sample surveys often have complex sample designs with multistage cluster sampling, stratification, and differential selection probabilities. This article is concerned with testing the null hypothesis ...

James O. Berger, Thomas Sellke, Testing a Point Null Hypothesis: The Irreconcilability of P Values and Evidence, Journal of the American Statistical Association, Vol. 82, No. 397 (Mar., 1987), pp. 112 ...