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Statistics - Difference between 1 tailed and 2 tailed test

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Explain the difference, if any, between a 1-tailed test and a 2-tailed test.

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The difference between 1 tailed and 2 tailed tests are determined. A complete, neat and step-by-step solution is provided.

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If the question asks us to determine if there is a difference between the statistic and a value, then we have a two-tail test.

In this case, the null hypothesis will be, for example, Mean = some value v, whereas the alternate hypothesis will be

Mean ≠ v. A simple example will be to test if the mean marks of a class in a Math quiz is 8 or not. In this case, we ...

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