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31 March, 22:43

Using the binomial pmf, when p=.3 and n=12 what is p (x=5) ? (answer to the third decimal place).

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  1. 1 April, 02:05
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    X~B (12, 0.3)

    P (X = 5) = 12C5 * (0.3) ⁵ * (0.7) ⁷

    = 792 * 0.00243 * 0.0823543

    = 0.15849579 ...

    = 0.158
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