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1 May, 18:24

Suppose act mathematics scores are normally distributed with a mean of 21 and a standard deviation of 5.3. a university plans to send letters of recognition to students whose scores are in the top 7%. what is the minimum score required for a letter of recognition?

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  1. 1 May, 18:25
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    Z from (-oo, + 0.525) = 0.700.

    Therefore, any score greater than 0.525 sd from the mean will be acceptable.

    21 + 5.3 (0.525) = 21 + 2.7825 = 23.7825 would be the minimum.

    The minimun score required for a letter of recognition is 23.7825.

    The answer in this question is 23.7825
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