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.
Compare two sample proportions using the 2-sample z-test. P-values can be calculated for one-or two-tailed comparisons and are compared results to a specified significance level.Inputs are: Outputs include: 1  sample proportions for each sample; 2  sample sizes for each sample; 3  specified significance level; and.4  whether test is one-tailed or two-tailed. 5  Difference in sample proportions;utputs include: 1  sample proportions for each sample; 2  sample sizes for each sample; 3  specified significance level; and. 4  whether test is one-tailed or two-tailed. 5  Difference in sample proportions;