Newsgroups: sci.stat.consult,sci.stat.edu Subject: Re: small sample size I hope that I have identified the Subject that Carl was addressing.
In a post that changed the Subject: line, had no internal reference to a prior message, and quoted none of the text, On 25 Nov 2003 11:20:47 -0800, [EMAIL PROTECTED] (Carl Schwarz) wrote: > This is a well known problem in microbiology. The standard method is > the Most Probable Number (MPN) methods. If you consult the standard > reference manuals on quality control for food inspection, you will > find the necessary tables for sample size, estimation, confidence > levels etc. > > The problem is often faced by food inspector who need to determine if > the bacterial levels of, e.g. shellfish, are below hazardous levels. > > Also, if you do a literature search on MPN in the Current Index to > Statistics and many references also occur. I have assumed that this was addressed to the question of sampling a 50 ml container of liquid, which might have a relatively large amount of bacteria. Or not. -- Rich Ulrich, [EMAIL PROTECTED] http://www.pitt.edu/~wpilib/index.html "Taxes are the price we pay for civilization." . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
