1st Edition

ISBN: 9781938168208

Author: Barbara Illowsky, Susan Dean

Publisher: OpenStax College

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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 8, Problem 11P

Use the following information to answer the next sewn exercises: The U.S. Census Bureau conducts a study to determine the time needed to complete the short form. The Bureau surveys 200 people. The sample mean is 8.2 minutes. There Is a known standard deviation of 2.2 minutes. The population distribudon Is assumed to be normal.

If the Census did another survey kept the error bound the same. and surveyed only 50 people instead of 200, what would happen to the level of confidence? Why?

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Chapter 8, Problem 10P

Chapter 8, Problem 12P

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Chapter 8 Solutions

Introductory Statistics

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