Mathematics, 04.07.2019 13:40 turboslayer
12. of the following, which one is an observational study? a. asking hearing-impaired people to try a new style of earphone to get their opinion b. comparing survival rates between treating bone cancer with surgery versus treating it with radiation c. recording the daily output of a balloon factory for 6 months d. polling people on their favorite color i believe it would be 'c', yes?
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12. of the following, which one is an observational study? a. asking hearing-impaired people to try...
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