After the final exam, the professor has curved the grade to approximately Gaussian distribution with mean 80 and variance 25. Suppose there are N students in this class. How many students have score at least 70? (Let (t) be the cumulative distribution function of N(0, 1), standard Gaussian random variable. You can leave the final result containing D.) (Note: Don't forget continuous correction!)

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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After the final exam, the professor has curved the grade to approximately Gaussian
distribution with mean 80 and variance 25. Suppose there are N students in this class. How many
students have score at least 70?
(Let (t) be the cumulative distribution function of N(0, 1), standard Gaussian random variable. You
can leave the final result containing D.)
(Note: Don't forget continuous correction!)
Transcribed Image Text:After the final exam, the professor has curved the grade to approximately Gaussian distribution with mean 80 and variance 25. Suppose there are N students in this class. How many students have score at least 70? (Let (t) be the cumulative distribution function of N(0, 1), standard Gaussian random variable. You can leave the final result containing D.) (Note: Don't forget continuous correction!)
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