The Shah was very unpopular with many Iranians. Iran is a very traditional Muslim nation, and many of the Iranian people were displeased with the changes the Shah imposed upon them. Many people close to the Shah were corrupt. Anyone who disagreed with the Shah was forced to leave the nation or face SAVAK, the Shah’s brutal secret police
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Answer:
completely randomized (answer from Khan Academy)
Explanation:
This study is an example of a completely randomized design since each subject is randomly assigned to one of the treatment groups without extra consideration to other variables.