[Octave-bug-tracker] [bug #58707] [statistics toolbox] ttest/ttest2 doc is wrong about hypothesis testing

[anonyme]

URL:
  <https://savannah.gnu.org/bugs/?58707>

                 Summary: [statistics toolbox] ttest/ttest2 doc is wrong about
hypothesis testing
                 Project: GNU Octave
            Submitted by: None
            Submitted on: dim. 05 juil. 2020 10:32:39 UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Documentation
                  Status: None
             Assigned to: None
         Originator Name: Samuel St-Jean
        Originator Email: samuel@isi.uu.nl
             Open/Closed: Open
                 Release: 5.2.0
         Discussion Lock: Any
        Operating System: Any

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Details:

The documentation for both function states that (about lines 44-45)

If @var{h} is 0 the null hypothesis is accepted, if it is 1 the null
hypothesis is rejected. 

But this is incorrect, the null hypothesis is never accepted. It would be
factually correct to instead state

If @var{h} is 1 the null hypothesis is rejected, if is 1 the null hypothesis
can not be accepted.

Which has a completely different meaning (we can never accept the null
hypothesis). It is possible other stat related function also make that
mistake, I did not check all of them out.




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