Excursions in Modern Mathematics, Books a la carte edition (9th Edition)

9th Edition

ISBN: 9780134469041

Author: Peter Tannenbaum

Publisher: PEARSON

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Textbook Question

Chapter 17, Problem 44E

Exercises 41 through 44 refer to the following: 2500 students take a college entrance exam. The scores on the exam have an approximately normal distribution with mean μ = 52 points and standard deviation σ = 11 points.

For each score, estimate the percentile corresponding to the score.

a. 52 points

b. 63 points

c. 60 points

d. 85 points

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 17, Problem 43E

Chapter 17, Problem 45E

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Excursions in Modern Mathematics, Books a la carte edition (9th Edition)

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