Elementary Statistics: Picturing the World (7th Edition)

7th Edition

ISBN: 9780134683416

Author: Ron Larson, Betsy Farber

Publisher: PEARSON

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Textbook Question

Chapter 5.3, Problem 33E

Finding Specified Data Values In Exercises 31–38, answer the questions about the specified normal distribution.

33. Energy Consumption The per capita energy consumption level (in kilowatt-hours) in Venezuela for a recent year can be approximated by a normal distribution, as shown in the figure. (Source: Latin American Journal of Economics)

(a) What consumption level represents the 5th percentile?
(b) What consumption level represents the 17th percentile?
(c) What consumption level represents the third quartile?

Chapter 5.3, Problem 33E, Finding Specified Data Values In Exercises 3138, answer the questions about the specified normal

FIGURE FOR EXERCISE 33

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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Chapter 5.3, Problem 32E

Chapter 5.3, Problem 34E

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Chapter 5 Solutions

Elementary Statistics: Picturing the World (7th Edition)

Ch. 5.1 - 1. Which normal curve has the greatest mean? 2....Ch. 5.1 - The scaled test scores for the New York State...Ch. 5.1 - A U.S. adult who is at least 20 years old is...Ch. 5.1 - Find the area under the standard normal curve to...Ch. 5.1 - Find the area under the standard normal curve to...Ch. 5.1 - Find the area under the standard normal curve...Ch. 5.1 - Find three real-life examples of a continuous...Ch. 5.1 - In a normal distribution, which is greater, the...Ch. 5.1 - What is the total area under the normal curve?Ch. 5.1 - What do the inflection points on a normal...

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Solution Summary: The author calculates the per capita energy consumptions level in Venezuela for a recent year. The 5th percentile is 1,315.99 kilowatt-hours.

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