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Thread: discrete math probability theory

  1. October 25th 2010, 01:09 PM #1
    robasc
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    discrete math probability theory

    Discrete probability?
    refer to a fair coin that is repeatedly flipped. If the coin is flipped 10 times, what is the probability of at most five heads.

    what formula do I use to solve this and how do i know what formula to use?

    I really need some help, I do not understand this at all
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  2. October 25th 2010, 01:14 PM #2
    Plato
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    \dbinom{10}{k}(0.5)^{10} is the probability of exactly k heads.

    Now sum that k=0\text{ to }5.
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