PSYCH 210 Study Guide - Midterm Guide: Statistical Power, Init, Standard Deviation
Document Summary
Understand how to us e the z-score formula to answer these probability questions. Understand how to state null and alternative hy pothes es, using statistical symbols and plain. Understand how to do a z -test, and what values are necessary before you can use z. Understand the decision matrix that delineates the two different types of error. Understand how these factors work by looking at power graphically (i. e. , using graphs of sampling distributions ). Know how to calculate power for a z-test. Understand how to use the t-table to find critical regions for hypothesis tests with t. Understand the steps of hypothesis testing using a one-sample t. Understand how to do an independent-samples t-test, and how the formula for an independent-samples t differs from the one-sample t formula. Understand how to do a related -samples t-test, and how the formula for a related-samples t differs from the independent -samples t formula.
