Fundamentals of Statistics, Books a la Carte Edition Plus MyLab Statistics with Pearson eText -- Access Card Package (5th Edition)

5th Edition

ISBN: 9780134763699

Author: Michael Sullivan III

Publisher: PEARSON

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Textbook Question

Chapter 7.1, Problem 31AYU

NW You Explain It! Cell Phone Rates Monthly charges for cell phone plans in the United States are normally distributed with mean μ = $62 and standard deviation σ = $18.

Source: Based on Information from Consumer Reports

a. Draw a normal curve with the parameters labeled.
b. Shade the region that represents the proportion of plans that charge less than $44.
c. Suppose the area under the normal curve to the left of x = $44 is 0.1587. Provide two interpretations of this result.

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 7.1, Problem 30AYU

Chapter 7.1, Problem 32AYU

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Chapter 7 Solutions

Fundamentals of Statistics, Books a la Carte Edition Plus MyLab Statistics with Pearson eText -- Access Card Package (5th Edition)

Ch. 7.1 - A _____ _____ _____ is an equation used to compute...Ch. 7.1 - A _______ is an equation, table, or graph used to...Ch. 7.1 - True or False: The normal curve is symmetric about...Ch. 7.1 - The area under the normal curve to the right of ...Ch. 7.1 - The points at x = _____ and x = _____ are the...Ch. 7.1 - The area under a normal curve can be interpreted...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - For Problems 712, determine whether the graph can...Ch. 7.1 - Prob. 10AYU

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Solution Summary: The author explains how to draw a normal curve with the parameters labeled.

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