Mathematics Master of Science in Applied Mathematics
Indiana University - Purdue University Fort Wayne
Estimating the difference between unknown means of two independent populations is a very useful project in many fields of study. Some standard tests or confidence intervals of the difference of two means exist. However, the existing tests are valid only when the two populations have known variances, or unknown but equal variances. The real world hardly ever gives such conditions.
Brad Moss (2011).
A New Approach for Comparing the Means of Two Populations.