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    Q1c can someone help me on this i thought for poisson distribution events were independent can someone clear up this issue i got?
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    I've moved this to the maths forum where hopefully you'll get more responses.

    Just some advice, it might be useful if you included the question or had a link to the paper, so our users will be in a better position to help you.
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    (Original post by jonnypdot)
    Q1c can someone help me on this i thought for poisson distribution events were independent can someone clear up this issue i got?
    Post a picture or link to your question.
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    https://57a324a1a586c5508d2813730734...%20Edexcel.pdf

    1c
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    They are independent, but you are calculating a conditional probability here.

    P(1 on first day, 3 on second day | (given) 4 in 2 days).
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    (Original post by Zacken)
    They are independent, but you are calculating a conditional probability here.

    P(1 on first day, 3 on second day | (given) 4 in 2 days).
    so can u give me a word equation of what to calculate?
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    (Original post by jonnypdot)
    so can u give me a word equation of what to calculate?
    Probability X = 1 * Probability X=3 all divided by Probability X=4
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    (Original post by Zacken)
    Probability X = 1 * Probability X=3 all divided by Probability X=4
    so P(B|A) = P(AnB) / P(A)

    P(AnB) = P(B) because event B has a total of 4 car and so does event A
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    (Original post by jonnypdot)
    so P(B|A) = P(AnB) / P(A)

    P(AnB) = P(B) because event B has a total of 4 car and so does event A
    Where A is the event "4 cars" and B is the event "1 car on day 1 and 3 cars on day 2", then yes.
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    (Original post by Zacken)
    Where A is the event "4 cars" and B is the event "1 car on day 1 and 3 cars on day 2", then yes.
    ok thank you
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    (Original post by jonnypdot)
    ok thank you
    No problem.
 
 
 
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