Mathematics, 06.07.2021 14:00 payloo

A researcher is interested in the effects of watching videos just before bed on the quality of sleep. He has decided to test the claim "Watching 1 hour of video just before going to bed reduces the number of minutes of REM sleep by more than 10%. " Which of the following data collection processes would be appropriate? Select only one answer choice.

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A researcher is interested in the effects of watching videos just before bed on the quality of sleep...