The grades in an exam have a normal distribution with µ=75 averages and o=8 standard deviation. The teacher gives AA to those who score 90 and above. Since 12 students got AA, what is the approximate number of students taking the exam?

The grades in an exam have a normal distribution with µ=75 averages and o=8 standard deviation. The teacher gives AA to those who score 90 and above. Since 12 students got AA, what is the approximate number of students taking the exam?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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4. The grades in an exam have a normal distribution with u=75 averages and o=8 standard
deviation. The teacher gives AA to those who score 90 and above. Since 12 students got
AA, what is the approximate number of students taking the exam?

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