Provides answers to commonly asked questions about COBRA. Health Benefits Under the Consolidated Omnibus Budget Reconciliation Act (COBRA) (PDF) Provides a detailed overview of the major provisions of COBRA.
In the two-sample pooled t-test the pooled variance is computed by averaging the two individual sample variances. The assumptions for the two-sample pooled t-test for the difference in two means are that there are random samples from two independent normal populations with common but unknown variance.
The paired t test (also called the âcorrelated groupsâ t test) is used when you. have two samples and a within-groups design. This design is also called a. dependent or repeated-groups design. Both the name of the statistical test. and the name of the research design can vary a great deal from book to book.