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.
If the dependent variable is measured at the interval/ratio level, the t-test is an appropriate statistical test. 307 Part 3 / Research Designs, Settings, and Procedures Chapter 19: Selecting Statistical Tests Two-Sample t-test for Independent Observations Exhibit 19-2 illustrates a typical situation.f the dependent variable is measured at the interval/ratio level, the t-test is an appropriate statistical test. 307 Part 3 / Research Designs, Settings, and Procedures Chapter 19: Selecting Statistical Tests Two-Sample t-test for Independent Observations Exhibit 19-2 illustrates a typical situation.