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Math Help - Please help

  1. #1
    Jon
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    Please help Urgent

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    Last edited by Jon; March 12th 2006 at 04:23 PM. Reason: Delete
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  2. #2
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    Quote Originally Posted by Jon
    A machine is producing parts that on average have a .05 probability of being defective. If a random sample of 5 parts is selected and each part is tested, finding the following probabilities:

    getting exactly 1 defective part
    getting no defective part
    getting at most 1 defective part
    getting at least 1 defective part
    getting 5 defective parts
    Use the formula:
    If the probability of an event is p then the probability of that event happening m out of n times is,
    _nC_mp^n(1-p)^{n-m}

    In the problems when they are for at most. You need to add up all the probabilities. For example, at most 3: which means probability of exactly 0 plus probability of exactly 1 plus probability of exactly 2 plus probability of exactly 3.

    The same with at least only in the other direction.
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