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https://issues.apache.org/jira/browse/MATH-1401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16002454#comment-16002454
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Bruno P. Kinoshita commented on MATH-1401:
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Continuing on case #1, [this
PDF|http://www.lexjansen.com/phuse/2013/sp/SP05.pdf] mentions that "The lower
bound is set to 0 when x = 0, and the upp
er bound is set to 1 when x = n. ". These are exact variable names in the R
library, and this is exactly what is happening.
There is still the matter that the calculation is different when x >0 and x !=
n.
> Exception at IntervalUtils.getClopperPearsonInterval
> ----------------------------------------------------
>
> Key: MATH-1401
> URL: https://issues.apache.org/jira/browse/MATH-1401
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 3.6.1
> Reporter: Art
> Assignee: Bruno P. Kinoshita
> Fix For: 4.0
>
>
> IntervalUtils.getClopperPearsonInterval throws an exception when number of
> successes equals to zero or number of successes = number of trials.
> IntervalUtils.getClopperPearsonInterval(1, 0, 0.95) or
> IntervalUtils.getClopperPearsonInterval(1, 1, 0.95) throws
> org.apache.commons.math3.exception.NotStrictlyPositiveException despite that
> its input parameters are valid.
>
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