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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Textbook Question

Chapter 5.2, Problem 17E

Using Normal Distributions In Exercises 17–20, answer the questions about the specified normal distribution.

17. SAT Total Scores Use the normal distribution in Exercise 13.

(a) What percent of the SAT total scores are less than 1300?
(b) Out of 1000 randomly selected SAT total scores, about how many would you expect to be greater than 1100?

13. Chapter 5.2, Problem 17E, Using Normal Distributions In Exercises 1720, answer the questions about the specified normal

(Source: The College Board)

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 5.2, Problem 16E

Chapter 5.2, Problem 18E

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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 calculates the percent of SAT total scores less than 1300 by converting the x value to z score.

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