Company unique risk can be virtually eliminated with a portfolio consisting of approximately 20

A researcher does not have the resources or time to do a probability sample. She wants to do a convenience sample, but she also wants to make sure that all ethnicities are fairly represented in her sample. What kind of sampling would you recommend to her?

a. census sampling. b. convenience sampling. c. judgment sampling. d. quota sampling e. cluster sampling.

Some works are considered to be in the public domain because ______________________

a. their copyright has expired b. the author is unknown c. they have no intrinsic value d. copyright was never filed