The study in Exercise 21.31 randomly assigned 123 children tothe two groups. The same
Chapter 0, Problem 21.33(choose chapter or problem)
The study in Exercise 21.31 randomly assigned 123 children tothe two groups. The same data could have come from a study that followedchildren whose parents did or did not enroll them in preschool. Explain carefullyhow the conclusions we can draw depend on which design was used.
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