The GRE (Graduate Record Exam) scores for both verbal and quantitative reasoning are approximately normally distributed and scaled to have mean 150 with standard deviation of 8.75.  Below what score do 40% of all scores fall? Below what score do 20% of all scores fall?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The GRE (Graduate Record Exam) scores for both verbal and quantitative reasoning are approximately normally distributed and scaled to have mean 150 with standard deviation of 8.75. 
Below what score do 40% of all scores fall?
Below what score do 20% of all scores fall?
 
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