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The national average SAT score is 1028. The standard deviation is 92. What is the 78th percentile score?
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The national average SAT score is 1028. The standard deviation is 92. What is the 78th percentile score?
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Feb 7, 2018
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The national average SAT score is 1028. The standard deviation is 92. What is the 78th percentile score?
Mathematics
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Tmhalbert
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You're looking for the score
such that
First transform
to the standard normal random variable.
Now 0.78 corresponds to a z-score of approximately
, which means
Oksana Romaniv
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Feb 12, 2018
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Oksana Romaniv
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