Answered: In a large section of statistics class…

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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In a large section of statistics class for the final exam are normally distributed, with a mean of 72 and a stabdard deviation of 9. Grades are assigned according to the following rule: The top 10% receive A's The next 20% receive B's The middle 40% receive C's The next 20% receive D's The bottom 10% receive F's Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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