Friday, June 17, 2011

Statistical hypothesis test

A one-sided test is a statistical hypothesis test in which the values for which we can reject the null hypothesis, H0 are located entirely in one tail of the probability distribution. In other words, the critical region for a one-sided test is the set of values less than the critical value of the test, or the set of values greater than the critical value of the test.

A two-sided test is a statistical hypothesis test in which the values for which we can reject the null hypothesis, H0, are located in both tails of the probability distribution.

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