Thanks Mark!  I will check it out.

Don


On Thu, 16 Aug 2001 Mark.Fisher@enron.com wrote:

>
> Don
>
> If you don't have censored data then the following reference should help.
>
> Thoman, Bain, and Antle. 1969. Inferences on the parameters of the Weibull
> distribution. Technometrics Vol 11, No 3.
>
> Mark Fisher
> Enron Wind
>
>
>
>
>
> "D. Mckenzie" <dmck@u.washington.edu>@lists.biostat.wustl.edu on 08/15/2001
> 05:05:08 PM
>
> Sent by:  s-news-owner@lists.biostat.wustl.edu
>
>
> To:   s-news group <s-news@wubios.wustl.edu>
> cc:
>
> Subject:  [S] confidence intervals for Weibull shape parameter
>
>
> Splus 2000 r3.
>
> I have fit a 2-parameter Weibull distribution to a data vector (fire-free
> intervals in forests) and would like to compute the probability that the
> shape parameter is greater than 1.  I can use bootstrap() [I presume] to
> compute the standard error.  Is there a closed expression for CIs? (I
> imagine a normal approximation would be pretty lame here).
>
> Thanks in advance for any suggestions.
>
> _______________________________________________________________________
>
>                            DON MCKENZIE
>
>                         Research Ecologist
>               College of Forest Resources, Box 352100
>                       University of Washington
>                         Seattle, WA 98195
>
>                             206.616.4095
>                         dmck@u.washington.edu
>
> _______________________________________________________________________
>
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