PSYC 2021 Lecture Notes - Lecture 8: Statistical Hypothesis Testing, Type I And Type Ii Errors, Mean Absolute Difference
19 Jan 2016
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Hypothesis testing a statistical method that use sample data to evaluate a hypothesis about a population parameter. M is consistent with the hypothesis hypothesis is. Big discrepancy between m and the hypothesis reasonable hypothesis is wrong. Research question: does stimulation during infancy affect human. Example: step 1: stat the hypothesis about the unknown population. Null hypothesis the treatment has no effect. Alternative hypothesis the treatment has an effect. H1: handled infants 26 pounds ( nondirectional or 2-tailed test ) Note to self: first i must know the alpha level and whether it"s a. In the case of a positive one tail, anything above the. In the case of a negative one tail, anything below the criteria z- In the case of a two tail, anything above positive criteria and. Must define high probability and low probability select a level of significance or alpha level. Step 3: collect and compare sample stats handling.
