: 14:41. Marks obtained by a number of students are assumed to be normally distributed withn 50 and variance 36. If 4 students are taken at random, what is the probability that exactly two ofthem will have marks over 62 ?0(z) dz = 0-4772 where Z is N (0, 1).

We want to find the probability of exactly two of them will have marks over 62 ?

Answered: • 14:41. Marks obtained by a number of…

A First Course in Probability (10th Edition)

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Author:Sheldon Ross

Publisher:Sheldon Ross

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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• 14:41. Marks obtained by a number of students are assumed to be normally distributed with n 50 and variance 36. If 4 students are taken at random, what is the probability that exactly two of them will have marks over 62 ? 0(z) dz = 0-4772 where Z is N (0, 1).