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    Question

    The distribution of heights of American women aged 18 to 24 is approximately normally distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the z-score for a woman six feet tall

    A 2.60 Correct Answer Incorrect Answer
    B 4.11 Correct Answer Incorrect Answer
    C 1.04 Correct Answer Incorrect Answer
    D 1.33 Correct Answer Incorrect Answer
    E 1.35 Correct Answer Incorrect Answer

    Solution

      Z = X-Mean / SD   X= 6 feet = 6*12 inches = 72 inches Z = (72 – 65.5) / 2.5 = 2.6

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