dt calculates the density function from the student's t distribution. If you want to perform a standard t-test you may want to look at the t.test() function included in the stats package.
Cheers, Francisco >From: [EMAIL PROTECTED] >To: r-help@stat.math.ethz.ch >Subject: Re: [R] ncp in dt >Date: Wed, 1 Nov 2006 13:09:50 -0500 (EST) > >i meant dt function in my email below. my aopolgies. On Wed, 1 Nov 2006 >[EMAIL PROTECTED] wrote: > > > > > i just wanted to know if the "non centraility parameter" as it is >referred > > to in the dt test is > > what i would think of as mu zero if i was doing a test of a > > hypothesis that the mean was equal to mu zero and the variance was > > unknown. thanks. > > > > ______________________________________________ > > R-help@stat.math.ethz.ch 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. > > > >______________________________________________ >R-help@stat.math.ethz.ch 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. _________________________________________________________________ Stay in touch with old friends and meet new ones with Windows Live Spaces ______________________________________________ R-help@stat.math.ethz.ch 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.