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A student score 78 on his statistics test where the average score was 90 the the standard deviation was 7.

  • Statistics - ,

    What is your question? Proportion scoring above? Below? Between score and mean?

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (whatever one you want) related to that Z score.

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