A lower-tailed test is a one-tailed test whose rejection region lies in the lower tail of the null distribution. It rejects the null hypothesis for sufficiently small values of the test statistic.
Lower-Tailed Test
See also
Critical Value, Null Distribution, One-Tailed TestExplore with Wolfram|Alpha
References
Hogg, R. V. and Tanis, E. A. Probability and Statistical Inference, 5th ed. Englewood Cliffs, NJ: Prentice-Hall, 1996.Cite this as:
Weisstein, Eric W. "Lower-Tailed Test." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Lower-TailedTest.html