What does a simple hypothesis mean
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The Alternative hypothesis (English: alternative hypothesis) denotes the opposite of the "null hypothesis" of a "hypothesis test". The alternative hypothesis usually describes the assumption that is actually of interest, the so-called Working hypothesis. For the practical implementation of a hypothesis test, however, it is of secondary importance. It only serves to localize the area of the "test variable" in which the null hypothesis is rejected, the so-called Rejection area. One distinguishes simple and compound Hypotheses, depending on whether one has a concrete value (Point hypothesis) or a range of values (Range hypothesis) specified as an alternative hypothesis. An area hypothesis can be formulated either unilaterally or bilaterally, depending on whether the area of rejection is located on one or both sides of the null hypothesis. The size of the rejection area depends on the selected »significance level«.
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Next page:Level of significance (probability of error) Upwards:Test procedure Previous page:Null hypothesis & nbsp index HJA 2001-10-01
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