Pearson eText for Elementary Statistics: Picturing the World -- Instant Access (Pearson+)

7th Edition

ISBN: 9780137504329

Author: Ron Larson, Betsy Farber

Publisher: PEARSON+

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Chapter 5.5, Problem 18E

Approximating a Binomial Distribution In Exercises 17 and 18. a binomial experiment is given. Determine whether you can use a normal distribution to approximate the binomial distribution. If you can, find the mean and standard deviation. If you cannot, explain why.

18. Cell Phone and Internet Privileges Sixty-five percent of parents of teenagers have taken their teenager’s cell phone or Internet privileges away as a punishment. You randomly select 10 parents of teenagers and ask them whether they have taken their teenager’s cell phone or Internet privileges away as a punishment. (Source: Pew Research Center)

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 5.5, Problem 17E

Chapter 5.5, Problem 19E

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Chapter 5 Solutions

Pearson eText for Elementary Statistics: Picturing the World -- Instant Access (Pearson+)

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 determines whether the normal distribution can be used to approximate the binomial distribution. The mean and standard deviation cannot be determined.

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