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Math Help - Need help urgent

  1. #1
    Junior Member
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    Exclamation Need help urgent

    Not sure if I am right. Help greatly appreciated
    A study carried out nationwide suggested that 15% of Irish men are diabetic. A random
    sample of 10 men is selected from the population and each is tested for diabetes. Calculate
    the probability that:
    (i) exactly 5 are diabetic.
    (ii) At least two and at most three are diabetic.

    i. 10 choose 5 ((.15)^5)(.85^5)

    ii. I added the probabilities of of two and 3 together


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  2. #2
    MHF Contributor
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    Re: Need help urgent

    Hey MathJack.

    Assuming I.I.D part i and ii are correct although for clarification you should show us the numeric answer for ii.
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