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The owner of an SAT preparation company has new students take a practice SAT before enrolling in the preparation program and another practice SAT at
The owner of an SAT preparation company has new students take a practice SAT before enrolling in the preparation program and another practice SAT at the end of the program. What is likely to be the greatest threat to internal validity in this case
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Information Systems For Business An Experiential Approach
Authors: France Belanger, Craig Van Slyke, Robert E. Crossler
2nd Edition
1943153019, 978-1943153015
