RE: Livermore Pu

["Weiner, Ruth" <rfweine@sandia.gov>]

I was not arguing anything -- and the numbers seem to me to be no different
from zero.  I just eyeballed the reported number (those>the detection limit)
and the reported uncertainty.

Ruth

Ruth F. Weiner, Ph. D.
Sandia National Laboratories 
MS 0718, POB 5800
Albuquerque, NM 87185-0718
505-844-4791; fax 505-844-0244
rfweine@sandia.gov


-----Original Message-----
From: Fritz Seiler [mailto:faseiler@nmia.com]
Sent: Monday, February 22, 1999 10:18 AM
To: Multiple recipients of list
Subject: Re: Livermore Pu


Dear Ruth,

I have a problem with your numbers! I would not call (10 +-5)  X or
(10 +- 10) X really different from zero, confidence level 90% or 95%
or not.  I just would not trust those numbers.  Let us remember that
this is a difference [(effect + bgrd) - bgrd].  Do you know what game
of "Now you see it, and now you don't" is being played here?  Pu is
the most dangerous substance.....so we have to be extra careful?

Regards

Fritz


Weiner, Ruth wrote:

> I checked the web site, and would like to add to Jeff's comment that the
> detectable levels had approximately +/- 50% to +/-100% uncertainty.
>
> Ruth F. Weiner, Ph. D.
> Sandia National Laboratories
> MS 0718, POB 5800
> Albuquerque, NM 87185-0718
> 505-844-4791; fax 505-844-0244
> rfweine@sandia.gov
>

*************************

Fritz A. Seiler, Ph.D.
Principal
Sigma Five Associates
P.O. Box 14006
Albuquerque, NM 87191-4006
Tel.    505-323-7848
Fax.    505-293-3911
e-mail: faseiler@nmia.com

**************************


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