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Math Help - basic probability

  1. #1
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    basic probability

    Hi guys,

    Well,
    can someone please show me how to solve the following:


    12% of voters in a recent election voted on the greens candidate,
    if 10 people were randomly selected
    what is the probability that exactly 4 people voted for the green candidate.


    thank you.
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  2. #2
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    Quote Originally Posted by hailwood View Post
    Hi guys,

    Well,
    can someone please show me how to solve the following:


    12% of voters in a recent election voted on the greens candidate,
    if 10 people were randomly selected
    what is the probability that exactly 4 people voted for the green candidate.


    thank you.
    X ~ Binomial(n = 10, p = 0.12)

    Calculate Pr(X = 4).
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