STAT235 Study Guide - Final Guide: Confidence Interval, Null Hypothesis, Statistical Parameter
16 Nov 2016
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Document Summary
A claim about a population parameter that is assumed to be true until it is declared false. The purpose is to reject ho most of the time. Ho is rejected only if sample evidence strongly suggest against it. If sample does not provide enough evidence, you failed to reject it. A claim about a population parameter that will be true if the null hypothesis is false. Function of the sample data on which a conclusion to reject or fail to reject ho is based. A measure of plausibility between the hypothesized value for a population characterized and the observed sample. The smaller the p-value, the more likely we reject ho. A p gets smaller, tails get smaller and the data is further away from ho. Is arbitrary, it"s usually something like 0. 01, 0. 05 or 0. 1. 1- is called the power of the test. Power = p(rejecting ho | ho is false) For a fixed n, lowering will raise .
