[mathcad] rgeom mistake?

Author: Marc Artzrouni Posted: Wed, 11 Jan 2006 16:25:33 +0100

Hi:
When using rgeom to simulate the geometric random variable G I have
values of 0 - which isn't possible for the "trial number
on which the first success occurs". The Help file (and my 2001i
manual) have p(1-p)^k for the probability
of G=k. An exponent k explains why G can indeed by 0 - however
every probability textbook I check
tells me the exponent is k-1, not k, with a smallest possible value of G
equal to 1 and not 0.
Can anyone confirm that this is a mistake, and let me know whether it's
been fixed in
more recent versions ?
Many thanks

Marc Artzrouni

Marc Artzrouni
Département de Mathématiques (IPRA)
Université de Pau - BP 1155
64013 Pau Cedex
FRANCE

Home page/page perso:
http://www.univ-pau.fr/~artzroun/
**********************************
tel: + 33 - (0)5 59 40 75 50
fax: + 33 - (0)5 59 40 75 55
e-mail: "marc.artzrouni"
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