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Unformatted text preview: 2/28/2008 1 Hypothesis Testing Hypothesis Testing Part 1 Reading Assignment: Chapter 8 Overview Overview Definition x In statistics, a hypothesis is a claim or statement about a property of a population. x A hypothesis test (or test of significance) is a standard procedure for testing a claim about a property of a population. Rare Event Rule for Rare Event Rule for Inferential Statistics Inferential Statistics If, under a given assumption, the probability of a particular observed event is exceptionally small, we conclude that the assumption is probably not correct. 2/28/2008 2 Components of a Components of a Formal Hypothesis Formal Hypothesis Test Test Null Hypothesis: Null Hypothesis: H x The null hypothesis includes the assumed value of the population parameter. x It must be a statement of equality. x Test the Null Hypothesis directly x Reject H or fail to reject H Alternative Hypothesis: Alternative Hypothesis: H 1 x The alternative hypothesis (denoted by H 1 or H a ) is the statement that the parameter has a value that somehow differs from the null hypothesis. x , <, > 2/28/2008 3 Note about Forming Your Note about Forming Your Own Claims (Hypotheses) Own Claims (Hypotheses) If you are conducting a study and want to use a hypothesis test to support your claim, the claim must be worded so that it becomes the alternative hypothesis.alternative hypothesis....
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This note was uploaded on 04/20/2008 for the course BER 345 taught by Professor Moore during the Spring '08 term at Alabama.
 Spring '08
 Moore

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