The necessary conditions having been met, a two-tailed test was conducted to test the difference between two population means. However, the statistical software provided only a one-tailed area of 0.045 as part of its output. In this case, the p-value for this test would have been 0.09.

Question

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In a two-tailed test, the p-value is double the one-tailed area. Therefore, if the one-tailed area is 0.045, the p-value for the two-tailed test is 0.045 * 2 = 0.09.

The Necessary Conditions Having Been Met, a Two-Tailed Test Was