qmst notes3 - Research Hypothesis-What the researcher...

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Research Hypothesis -What the researcher thinks will happen, or thinks the relationship between variables really is. To test a research hypothesis, a researcher needs: Statistical Hypotheses - Represent the mathematical relationship presumed to exist between 2 or more population parameters. Before you begin a research project, researchers need a : Null hypothesis, and an Alternative hypothesis - Null Hypothesis -states that there is no difference between groups in the population. Any difference between groups is due to sampling error. When we assume that sampling error is the cause for differences in samples, we fail to reject the null hypothesis. Statistical symbol: H 0. Example: Keeping customers on hold for ten seconds or less when they call for service will have no impact on overall customer satisfaction. Null Hypothesis is H 0 : u 1 =u 2 . Alternative Hypothesis -States that there is difference between the groups in the population. More of a difference than we'd expect by chance. Statistical symbol: H
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qmst notes3 - Research Hypothesis-What the researcher...

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