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Biology, 05.07.2019 18:00 kaliyab191

When human subjects are used during drug tests, researchers usually perform double-blind experiments. in double-blind experiments, neither the researchers nor the human subjects know which subjects are receiving the actual drug (experimental group) and which are instead receiving an inactive placebo (control group). double-blind experiments are conducted in order to a. decrease the accuracy of the data. b. reduce measurement errors. c. reduce sources of bias. d. improve the precision of the data.

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