Answer
A double-blind experiment is one in which neither the subjects nor the individuals who measure know which treatment was received.
A randomized experiment randomly assigns all individuals to a group.
Placebo-controlled indicates that there is a placebo group. A placebo is a substance or treatment with no active therapeutic effect that looks like the actual substance being tested.
Work Step by Step
A double-blind experiment is one in which neither the subjects nor the individuals who measure know which treatment was received.
A randomized experiment randomly assigns all individuals to a group.
Placebo-controlled indicates that there is a placebo group. A placebo is a substance or treatment with no active therapeutic effect that looks like the actual substance being tested.
