Kritikalbereich
Kritikalbereich is a term used in statistics and hypothesis testing. It represents the set of outcomes or values of a test statistic that would lead to the rejection of the null hypothesis. In simpler terms, if the result of a statistical test falls within the kritikalbereich, it is considered unlikely to have occurred by random chance alone, and therefore, the null hypothesis is deemed false. The selection of the kritikalbereich is determined by the chosen significance level (alpha) and the distribution of the test statistic under the null hypothesis.
The significance level, commonly denoted as alpha ($\alpha$), is the probability of rejecting the null hypothesis
Identifying the kritikalbereich involves understanding the alternative hypothesis. If the alternative hypothesis suggests a difference in