Typo in my previous email: sqrt((1-p1)*(1-p2)) should have read sqrt(p1*(1-p1)*p2*(1-p2))
I think! cheers, Rolf ###################################################################### Attention:\ This e-mail message is privileged and confidenti...{{dropped}} ______________________________________________ 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.