Answer to Question #302931 in Statistics and Probability for Pearlla

Question #302931

The results of the nationwide aptitude test in mathematics are normally distributed with mean=63 and standard deviation =5 . What is the 97.5th percentile?

Expert's answer

"P(Z<z)=0.975\\to z=1.96."

"\\frac{x-63}{5}=1.96\\to x=1.96*5+63="72.8.

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