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Mathematics, 09.01.2020 04:31 kkatlynn
3. a researcher wanted to find out whether higher levels of a certain drug given to experimental rats would decrease the time it took them to complete a given maze to find food.
a. why would the researcher have to carry out an experiment rather than an observational study?
b. describe an experiment that the researcher might carry out based on 30 comparable rats and three dosage levels: 0 mg, 1 mg, and 2 mg.
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