[R] Need some help reproducing a graph

[Rui Barradas]

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.
>
>
>
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