5th Edition

ISBN: 9780134506609

Author: Beckmann

Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)

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A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Textbook Question

Chapter 3.4, Problem 24P

Anklescratch County and Kneebend County are two adjacent countries. In Anklescratch, 30% of the miles of road have bike lanes, whereas in Kneebend, only 10% of the miles of road have bike lanes.

Elliot says that in the two-country area, 40% of the miles of road have bike lanes. He found 40% by adding 30% and 10%. Is Elliot correct or not? Explain.
What percent of miles of road in the two country area have bike lanes if Anklescratch Country has 200 miles of road and Kneebend County has 800 miles of road? What if it’s the other way around and Anklescratch Country has 800 miles of road and Kneebend County has 200 miles of road?
Ming says that 20% of the miles of road in the two-country area have bike lanes because 20% is the average of 10% and 30%. Explain why Ming’s answer could be either correct or incorrect. Under what circumstances will Ming’s answer be correct?

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Chapter 3.4, Problem 23P

Chapter 3.4, Problem 25P

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Chapter 3 Solutions

EBK MATHEMATICS FOR ELEMENTARY TEACHERS

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Solution Summary: The author explains that Anklescratch County and Kneebend County have bike lanes, but the statement of Elliot is incorrect.

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Chapter 3 Solutions