7th Edition

ISBN: 8220106844434

Author: Briggs

Publisher: PEARSON

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 2.B, Problem 61E

The Metric Mile. Consider the following world records (as of 2017) in track and field for the mile (1 USCS mile) and the 1500-meter (metric mile) races.

	Men	Women
Mile	3:43:13	4:12:56
1500 meters	3:26:00	3:50:07

a. Complete the sentence: The 1500-meter race is ________ % of the mile race in length.

b. Compute and compare the average speeds, in miles per hour, in the men’s mile and 1500-meter races.

c. Compute and compare the average speeds, in miles per hour, in the women’s mile and 1500-meter races.

d. If the average speed for the 1500-meter were run for the entire length of a mile race, would it result in a world record? Answer for both men and women.

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Chapter 2.B, Problem 60E

Chapter 2.B, Problem 62E

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