Answered: 2. Suppose the professor wants the…

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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2. Suppose the professor wants the scores to be curved in a way that results in the following:

Top 10% of scores receive an A

Bottom 10% of scores receive an F

Scores between the 70th and 90th percentile receive a B

Scores between the 30th and 70th percentile receive a C

Scores between the 10th and 30th percentile receive a D

Find the range of scores that would qualify for each grade under this plan.

(Assume all scores are normally distributed with amean of 60.53 and standard deviation of 10.96.)

Exam Scores	Letter Grade
	A
	B
	C
	D
	F

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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