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MathGroup Archive 1999

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Re: Biased Random[Integer]?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg19061] Re: Biased Random[Integer]?
  • From: "Allan Hayes" <hay at haystack.demon.co.uk>
  • Date: Thu, 5 Aug 1999 01:34:51 -0400
  • References: <7o5gbi$rim@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

One way:
BRI[p_] := If[Random[] < p, 0, 1];

Allan   
---------------------
Allan Hayes 
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565
       

AES <siegman at stanford.edu> wrote in message news:7o5gbi$rim at smc.vnet.net...
> "Random[Integer]" gives 0 or 1 with .probability 1/2.
> 
> What's the simplest expression that will yield 0 or 1 with probabilities 
> p  and  1-p ?
> 
> (p itself might be a rational fraction, p = p1/p2.)
> 
> I can write various expressions that do this, but what's the cleanest or
> tersest way?
> 



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