Hello, Try
qq <- qnorm(0.975) x <- 90 + c(-1, 1)*qq*10 f <- function(x) dnorm(x, 90, 10) curve(f, from = 60, to = 120) segments(x, 0, x, f(x)) Hope this helps, Rui Barradas Em 09-10-2012 00:48, dLevy escreveu:
Its not homework, it is a seminar exercise that I need to complete in order to learn enough in order to take the home exam next month. There are no lecture slides, just a generic textbook in R for bio statistics. Ive been trying to solve this problem for almost a week now but I am stuck. -- View this message in context: http://r.789695.n4.nabble.com/Need-some-help-reproducing-a-graph-tp4645492p4645508.html Sent from the R help mailing list archive at Nabble.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.
______________________________________________ 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.
