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An alternative hypothesis is the hypothesis which differs from the hypothesis being tested.
The alternative hypothesis is usually denoted by H1.
See hypothesis and hypothesis testing.
During the hypothesis testing of a parameter of a population, the null hypothesis is presented in the following way:
$$ H_0\colon\enskip\theta =\theta _0\:, $$
- 1.Lehmann, E.I., Romann, S.P.: Testing Statistical Hypothesis, 3rd edn. Springer, New York (2005)Google Scholar
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