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Math Help - random variable!!

  1. #1
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    random variable!!

    if X is N(3,16), find  P(4\leq X\leq8)

    pls don't know how to go about the problem above, help!
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  2. #2
    MHF Contributor
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    Re: random variable!!

    Standardize X and then use the tables for the standard normal distribution.
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