Mathematics, 21.01.2021 22:20, kaylaelaine18

A soccer coach wanted to improve the team's playing ability, so he instructed the players to run two miles a day. At the same time the players decided to take vitamins without the coach's knowledge. In two weeks the team was playing noticeably better. Identify the confounding variable in this situation.

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A soccer coach wanted to improve the team's playing ability, so he instructed the players to run two...