Size and Power of Tests for Equality of Means of Two Normal Populations with Unequal Variances
- 1 December 1975
- journal article
- research article
- Published by JSTOR in Journal of the American Statistical Association
- Vol. 70 (352) , 933
- https://doi.org/10.2307/2285460
Abstract
A method is developed for obtaining the size and power of a wide class of tests which includes solutions to the Behrens-Fisher problem proposed by various authors. A new test in this class is also developed which controls the size effectively and has high power. A comparison is made with other known tests as regards control of size. The power of the proposed test as well as that of Welch-Aspin is also obtained.Keywords
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