Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog​ s

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Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog​ scale, and the results given below are among the results obtained in the study. Higher scores correspond to greater pain levels. Is this study an experiment or an observational​ study?

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Lệ Thu 4 years 2021-08-13T04:10:52+00:00 1 Answers 46 views 0

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    2021-08-13T04:12:35+00:00

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