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Thread: Baye's rule Question ?

  1. #1
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    Baye's rule Question ?

    I need to know how this part happened
    Baye's rule Question ?-screen-shot-2019-06-16-7.04.47-pm.png

    Usually the Baye's rule does not transform the equation like this no ? shouldn't it be something like

    P(A∩B∩C∩(A∩B)) / P(A∩B) ???
    Attached Thumbnails Attached Thumbnails Baye's rule Question ?-screen-shot-2019-06-16-7.05.43-pm.png  
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  2. #2
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    Re: Baye's rule Question ?

    Quote Originally Posted by steelmaste View Post
    I need to know how this part happened
    Click image for larger version. 

Name:	Screen Shot 2019-06-16 at 7.04.47 PM.png 
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    Usually the Baye's rule does not transform the equation like this no ? shouldn't it be something like
    P(A∩B∩C∩(A∩B)) / P(A∩B) ???
    Surely you have not given us the original question in the exact wording as it was presented to you.
    If you have not then please do so at once.
    If you have posted the exact question, then it is the strangest conditional probability question that I have ever seen.
    Therefore, I await your reply.
    Last edited by Plato; Jun 16th 2019 at 07:38 PM.
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  3. #3
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    Re: Baye's rule Question ?

    Ah, I'm sorry as I was just stuck on that small part of the problem.

    I have a hard time understanding why Baye's rule Question ?-screen-shot-2019-06-16-7.05.43-pm.png

    the step from P[A∩B∩C l A∩B] to P[A∩B∩C]/P[A∩B] confuses me.

    this is the full solution of the book. I can actually solve this problem and get the right answer. It's just this little transition that really confuses me

    Baye's rule Question ?-screen-shot-2019-06-16-11.47.44-pm.png
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