[R] Writing program for these
Ben Bolker
bbolker at gmail.com
Thu Jan 27 15:24:34 CET 2011
Ben Boyadjian <benjy_cy_21 <at> hotmail.com> writes:
>
> Hello I am trying to solve these problems and I am not allowed to use loops or
ifs.
>
> 1st Question
> My first question is that I have generated 100 random numbers from the uniform
distribution then
> A)add only the negative integers.
> B)add elements until the first appearance of a negative element.
>
> I know how to choose the negative elements for A but how to find integers?
If this is the standard uniform U(0,1) distribution (which I assume
from your phrase "*the* uniform distribution" (emphasis added))
then there will be no integers in the sample ... ??
> And I dont know what to do for B.
>
> 2nd Question
> Simulate 1000 observations from the student-t distribution with 3 degrees of
freedom and then calculate
> the truncated mean by excluding bottom 5% and top 5%.
Looks like homework questions, which are not answered on this list.
Please read the posting guide; if these are *not* homework questions,
please give us a plausible context. (Even if these are not homework
questions, the posting guide asks that you "do your homework" in a
broader sense by indicating what steps you have taken to solve your
problem on your own before posting.)
One hint for the second question: ?rt
good luck,
Ben Bolker
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