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Answer to Question #316394 in Statistics and Probability for Tina
Question #316394
The results of a Nationwide aptitude test in mathematics are normally distributed with m=80 and s=15 what percentile rank of a score of 90
Expert's answer
"P(X<90)=P(Z<\\frac{90-80}{15})=P(Z<0.67)=0.7486."
Percentile rank: 74.
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