You are very certain that providing families with subsidized housing improves children's outcomes. Which study should most change the mean and variance of your beliefs?
A. A randomized trial showing that subsidized housing no impact on children.
B. A randomized trial showing that subsidized housing improves children's outcomes.
C. A randomized trial showing that subsidized housing hurts children's outcomes.
D. An observational study showing that subsidized housing hurts children's outcomes.
Answer: C. A randomized trial showing that subsidized housing hurts children's outcomes.