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.
Lab assignment. t-tests with SPSS. There are basically two kinds of t-tests. The between-groups (or independent means) t-test is a statistical test designed to examine whether means from two different samples are significantly different from one another.ab assignment. t-tests with SPSS. There are basically two kinds of t-tests. The between-groups (or independent means) t-test is a statistical test designed to examine whether means from two different samples are significantly different from one another.