is an option to hypothesis test functions that specifies the significance level for the test.


  • To use , you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].
  • The significance level for a test is the probability of rejecting the null hypothesis when it is in fact true.
  • The value of can be any number between 0 and 1 or None. The default setting is None.
  • If is a number, the output contains a statement of whether the hypothesis is accepted or rejected.
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