Answer to Question #60550 in Statistics and Probability for J.S.

Question

From the list of populations and samples, which samples are representative of the population?

-Population: Healthy adults from single geographical area for a vaccine study. Sample: Employees at a local factory

-Population: Individuals infected with hepatitis C virus. Sample: Patients presenting with hepatitis C virus at a liver clinic in a teaching hospital

-Population: Women diagnosed with breast cancer between 1990 and 1999. Sample: Women first attending hospital with breast cancer between 1990 and 1999

-Pop: study of the general population to assess the prevalence of a number of blood-borne viruses. Sample: Blood donors