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.
So far I've talked about one-sample methods, and two-sample methods. One-sample methods are things like the one sample z-test, one sample z-test for proportions, and one sample t-test. In these tests, one sample is being compared to the population.Now in two-sample methods, samples are being compared to other samples.o far I've talked about one-sample methods, and two-sample methods. One-sample methods are things like the one sample z-test, one sample z-test for proportions, and one sample t-test. In these tests, one sample is being compared to the population. Now in two-sample methods, samples are being compared to other samples.