Date:         Mon, 7 May 2007 15:54:09 -0400
Reply-To:     Peter Flom <peterflomconsulting@mindspring.com>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Peter Flom <peterflomconsulting@MINDSPRING.COM>
Subject:      Re: Confidence Interval
Comments: To: sanjay sun <sanjaysum@GMAIL.COM>
Content-Type: text/plain; charset=UTF-8

sanjay sun <sanjaysum@GMAIL.COM> wrote

>Hi All,
>
>I have two treatment groups for which I need to derive 95% confidence
>Interval for a lab test. Could anyone tell me how I can do that?
>

A lab test of what?
Is the thing being 'tested' a categorical variable, a continuous one, or what?
If it is a continuous variable, may we assume it is normally distributed?
If not normal, HOW is it distributed?
Are there 'clumps'?  Is there zero inflation?

Where did you get the data?

Peter