Answered: The graph illustrates a normal…

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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The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The mean price paid is $1200 and the standard deviation is $100.

900100011001200130014001500Distribution of Prices

What is the approximate percentage of buyers who paid between $900 and $1200?
%

What is the approximate percentage of buyers who paid between $1200 and $1400?
%

What is the approximate percentage of buyers who paid less than $1000?
%

What is the approximate percentage of buyers who paid more than $1500?
%

What is the approximate percentage of buyers who paid between $1100 and $1300?
%

What is the approximate percentage of buyers who paid between $1200 and $1300?
%

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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