Chapt.%208

Essentials of Statistics for the Behavioral Science

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Unformatted text preview: Chapter 8 Hypothesis Testing: Comparing a Sample Mean to a Population Mean General Logic (and Terminology) Hypothesis Testing – A procedure that uses sample data to test the credibility of hypotheses about a population. Hypothesis testing is the statistical process involved in accepting or rejecting statements about population parameters based on sample statistics. General Logic (and Terminology) Hypothesis (re-defined) – Tentative statement about the value of one or more population parameter. Null hypothesis - This hypothesis is based on the presumption that our means are NOT different. Alternative hypothesis - This is the hypothesis that we accept if our procedures indicate that we should reject the null hypothesis – It states that the means are different. General Logic (and Terminology) Alternative Hypotheses can be one of two types. A two-tailed or “non-directional” alternative hypothesis is formed when we are interested in whether or not there is a difference...
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Chapt.%208 - Chapter 8 Hypothesis Testing Comparing a...

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