5.24 Grades in a math course. Indiana University posts the grade distributions for its courses online." In one spring semester, students in Math 118 received 16.1% A's, 34.3% B's, 29.2% C's, 9.6% D's, and 9.8% F's. (a) Using the common scale A = 4, B = 3, C = 2, D = 1, F = 0, take X to be the grade of a randomly chosen Math 118 student. Use the definitions of the mean (page 237) and standard deviation (page 245) for discrete random variables to find the mean µ and the standard deviation o of grades in this section. n %3D (b) Math 118 is a large enough course that we can take the grades of an SR.S of 25 students and not worry about the finite populaticn correction factor. If x is the average of these 25 grades, what are the mean and standard deviation of x? ineg 008A (c) What is the probability that a randomly chosen Math 118 student gets a B or better, P(X > 3)?
5.24 Grades in a math course. Indiana University posts the grade distributions for its courses online." In one spring semester, students in Math 118 received 16.1% A's, 34.3% B's, 29.2% C's, 9.6% D's, and 9.8% F's. (a) Using the common scale A = 4, B = 3, C = 2, D = 1, F = 0, take X to be the grade of a randomly chosen Math 118 student. Use the definitions of the mean (page 237) and standard deviation (page 245) for discrete random variables to find the mean µ and the standard deviation o of grades in this section. n %3D (b) Math 118 is a large enough course that we can take the grades of an SR.S of 25 students and not worry about the finite populaticn correction factor. If x is the average of these 25 grades, what are the mean and standard deviation of x? ineg 008A (c) What is the probability that a randomly chosen Math 118 student gets a B or better, P(X > 3)?
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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Question
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