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## #1 2012-09-14 07:25:50

isa
Member
Registered: 2012-09-14
Posts: 2

### Binomial distribution

I have an assignment (see picture) which is a bit different,
I have to use Mathematics Handbook for Sience and Engineering to solve the problem,
I can look it up in tables. But the tables for binomial functions is only up to 20,
Normal Distribution to 3.4 and Poisson up to 24 in some cases.
So how do I do it? Approximation of some kind?

http://www20.speedyshare.com/RrWhg/download/image.png

Last edited by isa (2012-09-14 07:26:33)

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## #2 2012-09-14 07:31:00

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

### Re: Binomial distribution

Hi;

Which do you want a normal distribution? There are approximations for everything.

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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## #3 2012-09-15 05:19:41

isa
Member
Registered: 2012-09-14
Posts: 2

### Re: Binomial distribution

The assignment does not say so it does not matter.

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## #4 2012-09-16 07:00:51

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

### Re: Binomial distribution

Hi;

B(100,.7) can be approximated by N(70,√(21)).

See this page to understand what I did and see if you will require a continuity correction which will allow more accuracy.

http://en.wikipedia.org/wiki/Binomial_distribution

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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