Question

Which of the following is the best term for the type of experiment described

below?
Forty college students are randomly selected to be a part of a study in which
half will receive a new type of laundry detergent being tested to see how well
it cleans clothes, while the other half will receive an older brand of detergent.
Neither the researchers conducting the experiment nor the subjects
participating will know who receives the new detergent versus the old one.
O
A. Controlled experiment
B. Randomized experiment
C. Double-blind experiment
O
D. Biased experiment

Answer 1

I believe the answer is C.

Explanation:

Neither the test subjects nor the scientists know who got which detergent, so it can't be a biased experiment. It is C because, again, both the scientists and the test subjects know which detergent they got, hence the Double Blind situation.