The scores on a psychology exam were normally distributed with a mean of 69 and a standard deviation of 4. What is the standard score for an

Question

The scores on a psychology exam were normally distributed with a mean of 69 and a standard deviation of 4. What is the standard score for an exam score of 68​?

The standard score is ?

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Thành Công 2 months 2021-07-24T00:12:44+00:00 1 Answers 7 views 0

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    2021-07-24T00:14:17+00:00

    Answer:

    0.25

    Step-by-step explanation:

    Given that :

    Mean score, μ = 69

    Standard deviation, σ = 4

    Score, x = 64

    The standardized score, Zscore can be obtained using the formular :

    Zscore = (x – μ) / σ

    Zscore = (69 – 68) / 4

    Zscore = 1 / 4

    Zscore = 0.25

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