There are 40 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random variable with an expected value of 6 min and a standard deviation of 6 min. a. If grading times are independent and the instructor begins grading at 6:50 p.m. and grades continuously, what is the (approxi- mate) probability that he is through grading before the 11:00 p.m. TV news begins?

There are 40 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random variable with an expected value of 6 min and a standard deviation of 6 min. a. If grading times are independent and the instructor begins grading at 6:50 p.m. and grades continuously, what is the (approxi- mate) probability that he is through grading before the 11:00 p.m. TV news begins?

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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