Examlex
Until the 1920s,several states permitted the right to vote in nonfederal elections.
Null Hypothesis
A statement that assumes no effect or no difference in a statistical hypothesis test.
Intervention Group
The group in an experimental study that receives the treatment or intervention being tested, as opposed to a control group.
Study Group
A collection of individuals brought together to participate in a research study or to collectively study a particular subject.
Null Hypothesis
A statement used in statistics that proposes there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.
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