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Business Statistics: For Contemporary Decision Making, 7th Edition
book

Business Statistics: For Contemporary Decision Making, 7th Edition

by Ken Black
October 2011
Intermediate to advanced content levelIntermediate to advanced
928 pages
36h 13m
English
Wiley
Content preview from Business Statistics: For Contemporary Decision Making, 7th Edition

CHAPTER 10

Statistical Inferences about Two Populations

LEARNING OBJECTIVES

The general focus of Chapter 10 is on testing hypotheses and constructing confidence intervals about parameters from two populations, thereby enabling you to:

  1. Test hypotheses and develop confidence intervals about the difference in two means with known population variances using the zstatistic.
  2. Test hypotheses and develop confidence intervals about the difference in two means of independent samples with unknown population variances using the t test.
  3. Test hypotheses and develop confidence intervals about the difference in two dependent populations.
  4. Test hypotheses and develop confidence intervals about the difference in two population proportions.
  5. Test hypotheses about the difference in two population variances using the F distribution.

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image Online Shopping

imageThe use of online shopping has grown exponentially in the past decade. The Pew Internet and American Life Project surveyed 2400 American adults and reported that about 50% of adult Americans have purchased an item on the Internet at one time or another. A Nielsen survey of over 26,000 Internet users across the globe reported that more than 85% of the world's ...

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Publisher Resources

ISBN: 9781118213957Purchase book