Answered: Emissions of nitrogen oxides, which are…

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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Question

Emissions of nitrogen oxides, which are major constituents
of smog, can be modeled using a normal
distribution. Let x denote the amount of this pollutant
emitted (in parts per billion) by a randomly
selected vehicle. Suppose the distribution of x can
be described by a normal distribution with m 5
1.6 and s 5 0.4. A city wants to offer some sort
of incentive to get the worst polluters off the road.
What emission levels constitute the worst 10% of
the vehicles?

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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