On 15 Apr 2005 13:53:32 +0200, Peter Dalgaard <[EMAIL PROTECTED]> wrote: > Adrian Dusa <[EMAIL PROTECTED]> writes: > > > Hi, > > > > I'm using R for some undergraduate lectures, reaching the t tests. > > No matter what conf.level one specifies in the syntax, the output always > > shows > > the 95 percent confidence interval. > > That's just not true in my version of R.
You're right of course. I just typed "cl" instead of "conf" or "conf.level" and it took the predefined 0.95. Sorry to bothering you. > > t.test(extra ~ group, data = sleep, conf=.8) > > Welch Two Sample t-test > > data: extra by group > t = -1.8608, df = 17.776, p-value = 0.0794 > alternative hypothesis: true difference in means is not equal to 0 > 80 percent confidence interval: > -2.7101645 -0.4498355 > sample estimates: > mean in group 1 mean in group 2 > 0.75 2.33 > > > Is it possible to alter the function somehow, to report the CL percent > > confidence interval? > > -- > O__ ---- Peter Dalgaard Blegdamsvej 3 > c/ /'_ --- Dept. of Biostatistics 2200 Cph. N > (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 > ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 > ______________________________________________ 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
