CHAPTER 5
Hypothesis Testing
Chapter Objectives
• Introduce hypothesis testing
• Stress the connection between random variables and hypothesis testing
• Discuss how critical values are used and how P-values are calculated
• Introduce tests for claims about a proportion or mean
• Introduce tests for comparing two parameters
• Introduce chi-square tests
• Introduce the basics of ANOVA
• Stress the requirements of the data for each type of test
5.1 Introduction
In the media, we may hear statements such as
“More than 65% of voters support this bill,” or
“The average home value in the United States is less than $150,000.”
To determine if this first statement is true, we would have survey every voter and calculate the proportion who support the ...
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