[19329] in s-news-athena
[S] Confidence interval for a discrete Poisson variable with normally
daemon@ATHENA.MIT.EDU (Pierre Delfosse)
Tue Sep 28 07:45:59 1999
Message-Id: <C1B1A78EB953D211902D0040056AC48B0451E3@VRVCOM>
From: Pierre Delfosse <pierre.delfosse@centexbel.be>
To: s-news@wubios.wustl.edu
Date: Tue, 28 Sep 1999 09:24:45 +0200
Mime-Version: 1.0
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Dear S+ users,
I would like to build confidence intervals for a discrete Poisson
variable whose mean follows a normal distribution with mean>0 and CV<<1
(at least approximately, given the positivity constraint).
As this mean can take small values, the usual normal approximation to
the Poisson variable cannot be accepted.
Thank you for any help (including a pointer to a good reference).
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Pierre Delfosse Address: CENTEXBEL
pierre.delfosse@centexbel.be avenue du parc, 38
Telephone: 32-87-322443 B-4650 Chaineux BELGIUM
Fax: 32-87-340518
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