In drug studies, using a double-blind experiment design ensures that

In medical experimentation, patients sometimes improve when they think they are receiving a new drug; thus it is often necessary to administer a placebo to a control group. In medical research, the experimenter may be more likely to "observe" improvements among patients who receive the experimental drug than among those receiving the placebo. A double-blind experiment eliminates this possibility because neither the subject not the experimenters know which is the experimental group, and which is the control group.

Explanation:

hope this helps plz mark brainliest

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.