TAILIEUCHUNG - Ebook Introductory statistics (9th edition): Part 2

(BQ) Part 2 book "Introductory statistics" has contents: Inferences for two population means, inferences for population standard deviations, inferences for population proportions, chi square procedures, descriptive methods in regression and correlation, inferential methods in regression and correlation, analysis of variance. | CHAPTER 10 Inferences for Two Population Means CHAPTER OUTLINE CHAPTER OBJECTIVES The Sampling In Chapters 8 and 9, you learned how to obtain confidence intervals and perform hypothesis tests for one population mean. Frequently, however, inferential statistics is used to compare the means of two or more populations. For example, we might want to perform a hypothesis test to decide whether the mean age of buyers of new domestic cars is greater than the mean age of buyers of new imported cars, or we might want to find a confidence interval for the difference between the two mean ages. Broadly speaking, in this chapter we examine two types of inferential procedures for comparing the means of two populations. The first type applies when the samples from the two populations are independent, meaning that the sample selected from one of the populations has no effect or bearing on the sample selected from the other population. The second type of inferential procedure for comparing the means of two populations applies when the samples from the two populations are paired. A paired sample may be appropriate when there is a natural pairing of the members of the two populations such as husband and wife. Distribution of the Difference between Two Sample Means for Independent Samples Inferences for Two Population Means, Using Independent Samples: Standard Deviations Assumed Equal Inferences for Two Population Means, Using Independent Samples: Standard Deviations Not Assumed Equal The Mann–Whitney Test* Inferences for Two Population Means, Using Paired Samples The Paired Wilcoxon Signed-Rank Test* Which Procedure Should Be Used?* 432 CASE STUDY HRT and Cholesterol Older women most frequently die from coronary heart disease (CHD). Low serum levels of high-densitylipoprotein (HDL) cholesterol and high serum levels of low-densitylipoprotein (LDL) cholesterol are indicative of high risk for death from CHD. Some observational studies of .

• Toán học
• Introductory statistics
• Population means
• Population standard deviations
• Inferences for population proportions
• Chi square procedures
• Descriptive methods
• Inferential methods
• The nature of statistics
• Organizing data
• Descriptive measures
• Probability concepts
• Discrete random variables
• The normal distribution
• The sampling distribution
• Confidence intervals
• One population mean
• Inferences for population standard deviations
• Population proportions
• streamlined presentation
• develops frame theory
• applications
• electrical engineering
• applied mathematics
• statistics and computer science
• Evolution of analytical methods
• Real world inferential insights
• Miller and Modigliani
• Firm’s financial leverage
• Corporate bankruptcy model
• Research methods
• The research report
• Using inferential statistics
• Mixed methods research
• Procedure for conducting
• Experimental design
• Descriptive statistics
• Inferential statistics
• Survey research
• Quasi experimental designs
• Research design and methods
• Research design
• Using specialized research designs
• Describing data
• Using multivariate design
• Reporting your research results
• Quasi experimental design
• Data analysis
• Inferential analysis
• Research communication