Introduction to Hypothesis Testing

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CHAPTER8Introduction to Hypothesis TestingLEARNING OBJECTIVESAfter reading this chapter , you should be able to:1 Identify the four steps of Hypothesis Define null Hypothesis , alternative Hypothesis , level of significance, test statistic, p value, and statistical Define Type I error and Type II error, and identify the type of error that researchers Calculate the one-independent sample z test and interpret the Distinguish between a one-tailed and two-tailed test, and explain why a Type III error is possible only with one-tailed Explain what effect size measures and compute a Cohen s d for the one-independent sample z Define power and identify six factors that influence Summarize the results of a one-independent sample z test in American Psychological Association (APA) Inferential Statistics and Hypothesis Four Steps to Hypothesis Hypothesis Testing and Sampling Making a Decision: Types of Testing a Research Hypothesis : Examples Using the z Te s Research in Focus: Directional Versus Nondirectional Measuring the Size of an Effect: Cohen s Effect Size, Power, and Sample Additional Factors That Increase SPSS in Focus: A Preview for Chapters 9 to APA in Focus: Reporting the Test Statistic and Effect Size2 PART III: PROBABILITY AND THE FOUNDATIONS OF INFERENTIAL INFERENTIAL STATISTICS AND Hypothesis TESTINGWe use inferential statistics because it allows us to measure behavior in samples to learn more about th

Introduction to CHAPTER8 Hypothesis Testing LEARNING OBJECTIVES After reading this chapter, you should be able to: 1 Types of ErrorIdentify the four steps of hypothesis testing. 2 Hypothesis: Examples Define null hypothesis, alternative hypothesis, level of significance, test statistic, p value, and statistical significance.

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