Mathematics, 14.12.2021 16:50, HealTheWorld

Sports science researchers determined that, of those people who skateboard, 22% have never had an injury, 45% have had one injury, 18% have had two injuries, and 15% have had three or more injuries. What is the probability that a randomly chosen skateboarder has not had three or more injuries?

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Sports science researchers determined that, of those people who skateboard, 22% have never had an in...