Answered: Suppose the people living in a city…

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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Suppose the people living in a city have a mean score of 44 and a standard deviation of 6 on a measure of concern about the environment Assume that these concern scores are normally distributed. Using the 50% -34% -14% figures, approximately what percentage of people have a score above 44, above 50, above 32, above 38 below 44, below 50, below 32, and below 38

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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