The per capita energy consumption level (in kilowatt-hours) in a certain country for a recent year can be approximated by a normal distribution, as shown in the figure. (a) What consumption level represents the9thpercentile?(b) What consumption level represents the19thpercentile?(c) What consumption level represents thethirdquartile? 22504250250Kilowatt-hoursμ=2250 kWhσ=579.5 kWhx A normal curve labeled mu = 2250 k W h and sigma = 579.5 k W h is over a horizontal x-axis labeled Kilowatt-hours from 250 to 4250 in increments of 1000 and is centered on 2250. Question content area bottomPart 1(a) The consumption level that represents the9thpercentile is11kilowatt-hours.

Given, mean (μ)=2250 μ standard deviation (σ)=579.5 Let 'X' be the per capita energy…

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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 content area bottom

Part 1

(a) The consumption level that represents the

9th

percentile is

kilowatt-hours.

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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