In Problems, determine whether the study
Chapter 1, Problem 11E(choose chapter or problem)
Problem 11E
In Problems, determine whether the study depicts an observational study or an experiment.
Seventh-grade students are randomly divided into two groups. One group is taught math using traditional techniques; the other is taught math using a reform method. After 1 year, each group is given an achievement test to compare proficiency.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer