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Which of the following is the same as t² when examining the difference between two groups?
Friedrich Engels
A German philosopher, social scientist, and journalist, who, alongside Karl Marx, co-developed the communist theory.
Capitalistic Economic System
An economic system where trade and industry are controlled by private owners for profit, rather than by the state.
Private Individuals
Non-governmental persons who engage in economic transactions or investments on their own behalf.
Former Soviet Union
A federal socialist state in Northern Eurasia that existed from 1922 to 1991, comprising multiple subnational Soviet republics.
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