Essentials of Statistics, Books a la Carte Edition (5th Edition)

5th Edition

ISBN: 9780321926739

Author: Mario F. Triola

Publisher: PEARSON

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Textbook Question

Chapter 2.2, Problem 14BSC

Normal Distributions. In Exercises 11-14, answer the given questions which are related to normal distributions.

14. Normal Distribution Refer to the frequency distribution given in Exercise 10 and ignore the given frequencies. Assume that the first two frequencies are 2 and 6, respectively. Assuming that the distribution of the 40 sample values is a normal distribution, identify the remaining four frequencies.

10.

White Blood Cell Count of Females	Frequency
3.0-4.9	6
5.0-6.9	16
70-8.9	9
9.0-10.9	7
11.0-12.9	0
13.0-14.9	2

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 2.2, Problem 13BSC

Chapter 2.2, Problem 15BSC

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Chapter 2 Solutions

Essentials of Statistics, Books a la Carte Edition (5th Edition)

Ch. 2.2 - Frequency Distribution Table 2-2 on page 45 is a...Ch. 2.2 - Relative Frequency Distribution After construction...Ch. 2.2 - Do You Believe? In a Harris Interactive survey,...Ch. 2.2 - Analyzing a Frequency Distribution The...Ch. 2.2 - In Exercises 5-10, identify the class width, class...Ch. 2.2 - In Exercises 5-10, identify the class width, class...Ch. 2.2 - In Exercises 5-10, identify the class width, class...Ch. 2.2 - In Exercises 5-10, identify the class width, class...Ch. 2.2 - In Exercises 5-10, identify the class width, class...Ch. 2.2 - In Exercises 5-10, identify the class width, class...

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Solution Summary: The author explains the frequency distribution for white blood cell count of females with their corresponding first two frequencies are 2 and 6 and the sample values are 40 and is a normal distribution.

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