a researcher, assigns participants to either an experimental or a placebo group without informing them. John's students, who test the participants, are also unaware of the participants' assigned group. In this scenario, the experiment has used a

Which statement best explains how world war ii to end the great depression? a. new job opportunities opened as the united states produced more military products. b. the u.s. army provided new jobs that paid better than any other work at the time. c. people had to worry more about war problems than about the economic crisis. d. the war caused people to trust the economy enough to spend more money.

What is another name for the spanish navy in 1588? a) spanish royal fleet b) spanish armada c) spanish yacht crew d) spanish tall ships

Countries that are neither core nations nor peripheral nations