The grades in an exam have a normal distribution with μ=75 averages and σ=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?

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 grades in an exam have a normal distribution with μ=75 averages and σ=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?

4. 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?
Transcribed Image Text:4. 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?
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