Experiments different from all other types of research studies as they involve the manipulation of control variables and a random number generator or a lottery method are the different ways to assign participants to groups.
Experiment in a research study strictly adheres to a scientific research design. It includes a hypothesis and a variable that can be manipulated by the researcher and variables that can be measured, calculated and compared.
Each individual has an equal probability of being assigned to either group. Random assignment helps to make sure that members of every group within the experiment are the same.
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Answer:
pleasant aroma (or just aroma if you only can use one word)
Explanation:
A pleasant aroma describes an enjoyable or pleasing smell. Usually, actions associated with feelings of joy or pleasure are peaceful.
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The answer is the Thirteenth Amendment. This abolished slavery and involuntary
servitude. Earlier President Lincoln issued the Emancipation Proclamation that declared
the slaves free. This was made possible
through a string of victories that supported this amendment and victory of the
Union led to the abolition of slavery in the entire country.
In my opinion I think Russia but not sure.
