October 2011
Intermediate to advanced
928 pages
36h 13m
English
Content preview from Business Statistics: For Contemporary Decision Making, 7th Edition
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CHAPTER 8
Statistical Inference: Estimation for Single Populations
LEARNING OBJECTIVES
The overall learning objective of Chapter 8 is to help you understand estimating parameters of single populations, thereby enabling you to:
- Estimate the population mean with a known population standard deviation with the z statistic, correcting for a finite population if necessary.
- Estimate the population mean with an unknown population standard deviation using the t statistic and properties of the t distribution.
- Estimate a population proportion using the z statistic.
- Use the chi-square distribution to estimate the population variance given the sample variance.
- Determine the sample size needed in order to estimate the population mean and population proportion.
Compensation for Purchasing Managers
Who are purchasing managers and how much compensation do they receive? In an effort to answer these questions and others, a questionnaire survey of 1,839 purchasing managers who were readers of Purchasing magazine or who were respondents on the Purchasing Web site was taken. Demographic questions about sex, age, years of experience, title, industry, company annual sales, location, and others were asked ...
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