Mathematics, 20.02.2021 03:20 chivitogomez2400
A study is being done on a group of people to decide the harm of fast food to the body. The patients have their own choice on whether or not they choose to eat the food and the doctors just observe the results. What type of sample or survey is this? A. observational study B. self-selected C. controlled experiment
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A study is being done on a group of people to decide the harm of fast food to the body. The patients...
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