References

Best, D.I. and Rayner, C.W. (1987), 'Welch's Approximate Solution for the Behren's-Fisher Problem,' Technometrics , 29, 205-210.

Cochran, W.G. and Cox, G.M. (1950), Experimental Designs , New York: John Wiley & Sons, Inc.

Freund, R.J., Littell, R.C., and Spector, P.C. (1986), SAS System for Linear Models, 1986 Edition , Cary, NC: SAS Institute Inc.

Huntsberger, David V. and Billingsley, Patrick P. (1989), Elements of Statistical Inference , Dubuque, Iowa: Wm. C. Brown Publishers.

Moore, David S. (1995), The Basic Practice of Statistics , New York: W. H. Freeman and Company.

Lee, A.F.S. and Gurland, J. (1975), 'Size and Power of Tests for Equality of Means of Two Normal Populations with Unequal Variances,' Journal of the American Statistical Association , 70, 933-941.

Lehmann, E. L. (1986), Testing Statistical Hypostheses , New York: John Wiley & Sons.

Posten, H.O., Yeh, Y.Y., and Owen, D.B. (1982), 'Robustness of the Two-Sample t Test Under Violations of the Homogeneity of Variance Assumption,' Communications in Statistics , 11, 109-126.

Ramsey, P.H. (1980), 'Exact Type I Error Rates for Robustness of Student's t Test with Unequal Variances,' Journal of Educational Statistics , 5, 337-349.

Robinson, G.K. (1976), 'Properties of Student's t and of the Behrens-Fisher Solution to the Two Mean Problem,' Annals of Statistics , 4, 963-971.

Satterthwaite, F.W. (1946), 'An Approximate Distribution of Estimates of Variance Components,' Biometrics Bulletin , 2, 110-114.

Scheffe, H. (1970), 'Practical Solutions of the Behrens-Fisher Problem,' Journal of the American Statistical Association , 65, 1501-1508.

SAS Institute Inc, (1986), SUGI Supplemental Library User's Guide, Version 5 Edition . Cary, NC: SAS Institute Inc.

Steel, R.G.D. and Torrie, J.H. (1980), Principles and Procedures of Statistics , Second Edition, New York: McGraw-Hill Book Company.

Wang, Y.Y. (1971), 'Probabilities of the Type I Error of the Welch Tests for the Behren's-Fisher Problem,' Journal of the American Statistical Association , 66, 605-608.

Yuen, K.K. (1974), 'The Two-Sample Trimmed t for Unequal Population Variances,' Biometrika , 61, 165-170.