Which of the following is an assumption for computing the related-samples t test?
A. The population being sampled from is normally distributed.
B. The population variance of difference scores is unknown.
C. Samples are related or matched between groups, but not within groups.
D. All of these.
Ans: D
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____________ is a statistical property of a test
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Answer the following statement(s) true (T) or false (F)
Self-contained special education classrooms are the most ideal placements for students with disabilities