In John's study, he knows that each participant had an equal probability of being placed into each of his conditions. John must have used
a. external validity.
b. random assignment.
c. systematic sampling.
d. random sampling.
B
Political Science
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A __________________ is a government that reflects the will of the people
Fill in the blank with correct word
Political Science
Which treaty commits to reduce the production and use of gases that deplete the ozone layer?
a. Kyoto Protocol b. Mediterranean Acton Plan c. Montreal Protocol d. Intergovernmental Panel on Climate Change
Political Science