Answer: This is a "CONTROLLED PLACEBO EXPERIMENT".
Explanation: A controlled placebo experiment is a type of research method that is used to check the effectiveness of a drug in a patient. This is done by selecting a sample group, then randomly divide the two group into a placebo group ( this are the group that will receive the drug treatment ) and the controlled group( these are the group that will receive a coloured mixture that looks like the drug, but does not have any effect). Without the groups knowledge about the real drugs and the coloured mixture, but are followed up and tested.
This is a controlled placebo experiment, because 400 student has been choosed as the sample, and are divided into a placebo group and a controlled group, to check the effectiveness of a drug on their memory.
Answer:hatred of Israel by Arab Nations dye to the creation of Israel
Explanation:
The correct order of U.S. possession from East to West in the Pacific is Midway Island, Wake Island, Guam.
<h3>What is the order of U.S. possessions in the Pacific ocean?</h3>
The closest island to the U.S. that is under U.S. control is the Midway Islands.
Wake Islands then follow afterwards and finally the island of Guam is the most westward and is closer to the Philippines than to Midway.
Find out more on U.S. Pacific possessions at brainly.com/question/1595838
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