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CS1 chapter 7 question 12

Discussion in 'CS1' started by Ayesha Khalil, Aug 4, 2019.

  1. Ayesha Khalil

    Ayesha Khalil Made first post

    Hi,

    I'm stuck on question 12, part i of the practise questions for ch7.

    Where it says in the question "calculate the expected number of policies giving rise to the different number of claims assuming a poisson model" - I don't understand what formula they are using in the solutions.

    Thanks for you help in advance :)

    Ayesha
     
    Ayesha Khalil, Aug 4, 2019
    #1
  2. John Lee

    John Lee ActEd Tutor Staff Member

    I think you mean Question 11
    Instead of calculating each Poisson probability from scratch, they have used a recursion formula \(P(X=x) = \frac{\mu}{x} P(X=x-1)\) to save time.
    You can use the usual formula from the Tables and still get the same answer.
     
    John Lee, Aug 5, 2019
    #2

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