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Find the matrix product AB, if it is defined.
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Fraternal Twins
Twins that develop from two different eggs fertilized by two different sperm cells, genetically similar like regular siblings rather than identical twins.
Confounding Variable
A variable other than the independent variable that may cause a result or effect in an experiment, making it difficult to isolate the impact of the independent variable.
Length of Time
A measurement that quantifies the continuous period during which an action, process, or condition exists or persists.
IQ Scores
Standardized measures used to assess human intelligence relative to a statistical normal distribution.
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