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Simple Probability...

  • 22-04-2013 8:37pm
    #1
    DylanII
    Closed Accounts Posts: 1,102 ✭✭✭


    Hi,

    I was wondering could someone give me a little help here. Im trying to work something out, but Ill use different numbers here just so as when I have to do it I will know if I actually understood rather than copy what ever you tell me.

    You know that 23.3% of all people in Ireland have a dog.

    Say there are 15 people in a room. What is the probability that 4 of them has a dog. What is the probability that none of them has a dog?

    Thanks in advance.


Comments

  • #2
    TheBody
    Registered Users, Registered Users 2 Posts: 5,633 ✭✭✭TheBody


    DylanII wrote: »
    Hi,

    I was wondering could someone give me a little help here. Im trying to work something out, but Ill use different numbers here just so as when I have to do it I will know if I actually understood rather than copy what ever you tell me.

    You know that 23.3% of all people in Ireland have a dog.

    Say there are 15 people in a room. What is the probability that 4 of them has a dog. What is the probability that none of them has a dog?

    Thanks in advance.

    Sounds like a binomial distribution problem to me!!

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


  • #3
    DylanII
    Closed Accounts Posts: 1,102 ✭✭✭DylanII


    Thank you


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