[R] Finding a probability

[Moshe Olshansky]

You commands are correct and the interpretation is that the probability that a normal random variable with mean 1454.190 and
standard deviation 162.6301 achieves a value of 417 or less is 8.99413e-11


--- On Wed, 27/8/08, rr400 <raul.felipe.ramirez at gmail.com> wrote:

> From: rr400 <raul.felipe.ramirez at gmail.com>
> Subject: [R]  Finding a probability
> To: r-help at r-project.org
> Received: Wednesday, 27 August, 2008, 11:50 AM
> Hi, i am trying to determine a certain probability and i am
> unsure if the
> commands i have entered into R are correct. 
> I am trying to determine how unusual it would be to find
> something with the
> value 417 for a set of numbers with mean 1454.190 and
> standard deviation
> 162.6301. The command i entered was:
> >pnorm (417, 1454.190, 162.6301)
> Which returned:
> [1] 8.99413e-11
> I am unsure how to interpret this number as it is, and
> hence whether i have
> entered the appropriate commands for what i am trying to
> find out. If the
> commands are correct, how can i simplify the answer to
> understand the
> probability?
> 
> Thanks in advance, R.
> 
> 
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