Answer:
With no "control" you have no base line to compare your results with, for whatever hypothesis your testing
Explanation:
Answer:
Age requirements : they must be up to a particular age. They must be embers of my class and they must have spent a certain time in that class. They must be aware of the things that the class need.
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Answer:
National Security Agency/Central Security Service
Explanation:
NSA is also one of the most important centers of foreign language analysis and research within the U.S. government and is said to be the largest employer of mathematicians in the United States and perhaps the world.
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Answer:
better you write your own answer.... make creative mind not searching mind
hope u understood