Hypothesis Testing: Single Mean and Single …

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Chapter 9Hypothesis testing : Single Mean andSingle Hypothesis testing : Single Mean and Single Student Learning ObjectivesBy the end of this chapter, the student should be able to: Differentiate between Type I and Type II Errors Describe Hypothesis testing in general and in practice Conduct and interpret Hypothesis tests for a Single population mean, population standard deviationknown. Conduct and interpret Hypothesis tests for a Single population mean, population standard deviationunknown. Conduct and interpret Hypothesis tests for a Single population IntroductionOne job of a statistician is to make statistical inferences about populations based on samples taken from intervalsare one way to estimate a population parameter. Another way to makea statistical inference is to make a decision about a parameter. For instance, a car dealer advertises thatits new small truck gets 35 miles per gallon, on the average.

370 CHAPTER 9. HYPOTHESIS TESTING: SINGLE MEAN AND SINGLE PROPORTION 1. Set up two contradictory hypotheses. 2. Collect sample data (in homework problems, the data or summary statistics will be given to you).

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