EDMS 451 Study Guide - Midterm Guide: Null Hypothesis, Statistic, Test Statistic

• School: University of Maryland
• Department: Measurement, Statistics, and Evaluation
• Course: EDMS 451
• Professor: Greg Hancock

Document Summary

State the null and alternative hypothesis, they will always be opposite. If ho: u=500, then ha: u doesn"t = 500: set the criterion for rejecting the null, compute the standard error. Solve, then plot normal curve the new points. Choose rejection region (that"s given to you) look up on chart to nd the critical value of z. The critical value is on the normal z table. So if the alpha level is 5%, split it to. 2. 5% and look it up on the table at . 025. When you look it up on the chart you get the z score. This will be where your critical values are. Compute the z observed for the sample mean (sample mean is given to you) The value you get determines if you will reject or retain the null. If value is not in between critical values, reject the null. Then you take that value to nd your p value.