Hi Mary, You're really close, the issue is that you have a list, not a vector (see the documentation for ?integrate). So, you need to use:
1 - Beta[[1]] or (again relying on the documentation), you could also use $ and call it by name: 1 - Beta$value Cheers, Josh On Sat, Nov 20, 2010 at 3:52 PM, <mms...@comcast.net> wrote: > Hello, > > I want only the value of Beta so the statement Power<-1-Beta[1] works right. > > How to do? See code below > > Beta <- integrate(dnorm,mean=0,sd=1, 2.3552,Inf) > Power<- 1-Beta[1] > > Sincerely, > Mary A. Marion > > ______________________________________________ > R-help@r-project.org 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.com/ ______________________________________________ R-help@r-project.org 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.