The U.S. consistently has a lower infant mortality rate than other western democracies

Under normal circumstances, capital formation on a national basis depends heavily on:

A. domestic savings B. foreign loans C. foreign direct investments D. natural resources E. international trade

If your research design involved collecting data on several different occasions before you applied your experimental treatment, followed by a series of additional measurements, you would be using

a. a static-group comparison design. b. a one-group pretest-posttest design. c. an interrupted time series design d.. a nonequivalent control group design.