The scores for a standardized test follow a normal distribution with a mean test score of x = 84, and a standard test deviation =6. What percent of students score between 95 and 100?What score must a student get higher than to be in a top 10%?

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Answered: The scores for a standardized test…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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The scores for a standardized test follow a normal distribution with a mean test score of x = 84, and a standard test deviation =6.

What percent of students score between 95 and 100?
What score must a student get higher than to be in a top 10%?

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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