Thank you for the info. It helps. After all, it would be:
> 0.1304348-1.96*(sqrt((0.1304348*(1-0.1304348))/46)) [1] 0.03310968 > 0.1304348+1.96*(sqrt((0.1304348*(1-0.1304348))/46)) [1] 0.2277599 Does R have a function for the calculation above? ej On 10/20/06, Francisco J. Zagmutt <[EMAIL PROTECTED]> wrote: > Ethan, > > You need to explain why you think this is "not the right function to use". R > is doing exactly what you are asking it to do. Now is up to you to choose > the methodology you feel is correct. > For a good discussion on your particular issue I recommend you the following > reference: > > A. Agresti and B. A. Coull, "Approximate is better than "exact" for interval > estimation of binomial proportions," The American Statistician, vol. 52, no. > 2, pp. 119–126, 1998. > > Once you figure out the "right function to use" see if the function is > available in R. If not readily available, and if after searching through > R's documentation and the forum archives you still can't find a way to > perform the calculation, then is time to get back to this forum. > > Regards, > > Francisco > > > Dr. Francisco J. Zagmutt > College of Veterinary Medicine and Biomedical Sciences > Colorado State University > > > > > >From: "Ethan Johnsons" <[EMAIL PROTECTED]> > >To: [email protected] > >Subject: [R] binom.test > >Date: Fri, 20 Oct 2006 17:18:02 -0400 > > > >A quick question, please. > > > >46 e coli lab samples are tested, 6 of them returned positive. > > > >So, the best point estimate for p is 6/46 = 0.1304348. > > > >For a 95% CI for p, I thought binom.test would give me the correct > >result, but it seems it is not the right function to use. What is > >the R function for this? > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
