2nd Edition

ISBN: 9780077836351

Author: Author

Publisher: McGraw Hill

Concept explainers

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Textbook Question

Chapter 1.1, Problem 18E

In Exercises 17â€”20, determine whether the number described is a statistic or a parameter.

The average age of the employees in a certain company is 35 years.

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Chapter 1.1, Problem 17E

Chapter 1.1, Problem 19E

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Chapter 1 Solutions

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In Exercises 17â€”20, determine whether the number described is a statistic or a parameter. The average age of the employees in a certain company is 35 years.

Solution Summary: The author explains that parameter numbers are often used to describe a sample or population. The given number 35 years describes the average age of all employees in the company.

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