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Math Help - AP statistics probability

  1. #1
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    AP statistics probability

    Among the doctors belonging to a very large health system, 82% carry some type of malpractice insurance. Suppose that we randomly select three doctors from the set of all doctors belonging to the health system. Assuming that the results are independent, the probability that at least one of the three doctors does not carry such insurance is

    A. 0.994.
    B. 0.449.
    C. 0.006.
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  2. #2
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    Re: AP statistics probability

    P(at least 1) = 1 - P(none)
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