Math Is Fun Forum

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Bayes Theorem

I can solve these problems for the life of me. Someone please help.

Solve the problem using Bayes' Theorem. Round the answer to the nearest hundredth, if necessary.
For two events M and N, P(M) = .2, P(NIM) = .8, and P(NIM') = .7. Find P(MIN).

Solve the problem using Bayes' Theorem. Round the answer to the nearest hundredth, if necessary.
For two events M and N, P(M) = .6, P(NIM) = .2, and P(NIM') = .4. Find P(M’IN).

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Bayes Theorem

Hi finitehelp;

Solve the problem using Bayes' Theorem. Round the answer to the nearest hundredth, if necessary.
For two events M and N, P(M) = .2, P(NIM) = .8, and P(NIM') = .7. Find P(MIN).

Bayes is:

You have the numerator but you don't have the denominator. So lets get it.

' means complement.

Last edited by bobbym (2009-07-18 14:02:14)

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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.

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Re: Bayes Theorem

I know but the ' mark are tripping me up

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Re: Bayes Theorem

Okay thanks that help me solve the first one i think its .222 but for the second one i cant find p(n)

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Re: Bayes Theorem

i was working on the first one with you.

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Re: Bayes Theorem

bobbym how do i get the second one if i dont know p(m')?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Bayes Theorem

P(M')=.4 for the second one.

Last edited by bobbym (2009-07-18 14:28:26)

---

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.

finitehelp

Member

Registered: 2009-06-21

Posts: 80

Re: Bayes Theorem

thanks again bobbym

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Bayes Theorem

Hi finitehelp;

Are you sure you have everything you need?

---

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.