Mathematics, 18.01.2021 14:00 mecennabosaaen

Researchers conducted an experiment to determine if riding a bike to school improves attention span. What are the treatment and outcome variables? a. The treatment variable is attention span. The outcome variable is the child's attention span score.
b. The treatment variable is riding a bike to school. The outcome variable is the child's attention span.
c. The treatment variable is attention span. The outcome variable is whether or not the child rode a bike to school.
d. The treatment variable is riding a bike to school. The outcome variable is whether or not the child rode a bike to school.

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Researchers conducted an experiment to determine if riding a bike to school improves attention span....