PSYC 2F23 Chapter Notes - Chapter 8: Sample Size Determination, Standard Deviation, Effect Size
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Psyc 2f23 chapter 8: intro to hypothesis testing. Hypothesis test: statistical method that uses sample data to evaluate a hypothesis about a population: state hypothesis about a population. Procedure is as follows: no difference or independent variable has. Null hypothesis: (ho) states that in the general population, there is no change, no relationship; in the context of an experiment, it predicts that the no effect on the dependent variable for the population. Alternative hypothesis: h1 states that there is a change, a difference, or a general population. Alpha level/level of significance: probability value that is used to define the unlikely" in a hypothesis test. Critical region: composed of the extreme sample values that are very unlikely alpha level to be obtained if the null hypothesis is true. The boundaries for determined by the alpha level. If sample data fall in the critical region, the: then obtain a random sample from the population.
