Hypothesis testing of a difference between means can help a researcher decide whether a certain difference was obtained merely by chance or because of differences in the underlying populations.

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Hypothesis testing is a statistical method used to determine whether there is enough evidence in a sample of data to infer that a certain hypothesis about the population is true. In the context of comparing means, hypothesis testing can help us determine whether a difference in sample means is likely due to chance or if there is evidence that there is a true difference in the population means.

Hypothesis Testing of a Difference Between Means Can Help a Researcher