The graph of a normally distributed random variable is given. Use the graph to answer the questions that follow.What is the mean?What is the standard deviation?What percentage of values should fall between 39 and 45?%Which value has a z-score of -2? The graph of a normally distributed random variable is given. Use the graph to answer the questions thatfollow.2127What is the mean?33What is the standard deviation?39Which value has a z-score of -2?45What percentage of values should fall between 39 and 45?5157Q

Answered: The graph of a normally distributed…

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 of a normally distributed random variable is given. Use the graph to answer the questions that follow.

What is the mean?

What is the standard deviation?

What percentage of values should fall between 39 and 45?
%

Which value has a z-score of -2?

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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