Acoach wants to see how long the members of the swim team can hold their breath. he times each member and finds that the average is 53 seconds. what type of study is this?

This type of study based on observations is called observational study.

This question is based on observational study as the coach is observing each candidate's performance in their natural state. He collects the information and then finds the average time or reaches to a conclusion. Hence, its an observational study.

step-by-step explanation:

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