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20 June, 01:18

Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 14.6; σ = 3.8

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  1. 20 June, 01:39
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    0.0003

    Step-by-step explanation:

    for the indicated probability

    we need to find : Probability (P) (X > or = 30) = 1 - P (X < 30)

    z-score (30) = (30 - 14.6) / 3.8 = 4.053

    looking in z-tables for the corresponding probability

    P (x<30) = 0.99997

    indicated probability

    P (X > or = 30) = 1 - 0.99997 = 0.0003 (answer)
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