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!)

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!)

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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