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A group of scientists wish to test a new drug that may reduce LDL cholesterol. They initiate phase 1 trials in mice. Each mouse is fed an identical diet, allowed the same amount of exercise, and give. Either 0, 5mg, 10mg, or 20mg of the drug Dailey. After 2 weeks, they draw blood and test for LDL cholesterol levels.

Which of these is the independent variable?

Respuesta :

The independent variable in this experiment is the dosage of the drug given to the mice. Specifically, the different levels of the drug (0mg, 5mg, 10mg, or 20mg) represent the variations in the independent variable. The scientists are manipulating the dosage to observe its effects on the dependent variable, which is the LDL cholesterol levels in the mice after 2 weeks.