PSY201H1 Study Guide - Quiz Guide: Type I And Type Ii Errors
Document Summary
2nd (scientific) alternative hypothesis, h1: states there is effect of treatment on dep variable. Ie. there is change, dif, or relationship for general pop. Previous example h1: 80 (meaningfullt dif from 80) Frame significance testing in terms of null hypothesis because easier to prove something is false than to prove it is true. being correct. Step 2: use sample data to determine likelihood of h0, do by determining what sample means would be consistent w h0 & what sample means would be inconsistent w it. Ie. look at distr of sample means to determine which means are near enough to pop & which are too far from for h0 to hold. Find where sample score is relative to cut-off on normal curve hypothesis test. To determine what is high- vs. low-probability sample, select specific probability value. Level of significance or alpha level, -level, for. Establishes criterion, or cut-off, for making: usually set = . 05 (5%), . 01 (1%), or . 001 (0. 1%).
