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#1 2013-04-07 13:28:30

White_Owl
Member
Registered: 2010-03-03
Posts: 106

How to find a number of trials?

How to find n in the equation:


Here cdf_binomial() is a distribution function  of binomial random variable:

By trial and error I found that n=164. But is it possible to express n for a direct calculation? How did people solve such problems before the age of computers?

Last edited by White_Owl (2013-04-07 13:29:24)

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#2 2013-04-07 13:57:45

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: How to find a number of trials?


In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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