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Random numbers

To: S-news <s-news@lists.biostat.wustl.edu>
Subject: Random numbers
From: Santosh <santosh2005@gmail.com>
Date: Sun, 19 Oct 2008 01:51:26 -0700
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Dear R  users,

How do I generate random numbers (given a vector of numbers of size K to be sampled from, with replacement), with an assigned probability for each element of the vector?
e.g.
sample(c(0,1), 10,rep=T,c(0.7,0.3))  is similar to rbinom(10, 1, 0.3). Is that correct?

similarly
sample(c(1, 3,6,7,9), 20,rep=T,c(0.2,0.3,0.1,0.1,0.3))  is similar to ??function?.

Hope I managed to put across my question..

Regards and Thanks much in advance
Santosh
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