PSYC 1010 Chapter Notes - Chapter 8: Type I And Type Ii Errors, Beta, Null Hypothesis
2 Mar 2017
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A closer look at the z-score statistic: test statistic used in the hypothesis test, the sample data are converted into a single, specific statistic that is used to test the hypotheses. On the other hand, if the formula produces an extreme value (a very unlikely result), we conclude that the. Represented by the symbol b the greek letter beta. In this case, you fail to reject h0 and conclude that the treatment does not appear to have an effect. In general, researchers try to maintain a balance between the risk of a type i error and the demands of the hypothesis test. Alpha levels of . 05, . 01, and . 001 are considered reasonably good values because they provide a low risk of error without placing excessive demands on the research results. Statistically significant: a result is said to be significant or statistically significant if it is very unlikely to occur when the null hypothesis is true.
