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15 March, 18:03

For Alma to be accepted into her favorite college, she will have to earn an entrance exam score at least 2 standard deviations above the mean. Assume entrance exam scores are normally distributed, with a mean of 800 and a standard deviation of 40. What exam score does Alma need to be accepted at her favorite college?

720

760

840

880

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  1. 15 March, 18:21
    0
    880

    Step-by-step explanation:

    She will have to earn an entrance exam score at least 2 standard deviations above the mean, mathematically:

    exam score ≥ mean + 2*standard deviation

    dа ta:

    mean = 800

    standard deviation = 40

    Replacing into the above equation:

    exam score ≥ 800 + 2*40

    exam score ≥ 880
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