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sammy [17]
3 years ago
11

when a study is designed so that neither the subjects nor the experimenters know which subjects are in the treatment group and w

hich ones are in the control group, the study is called a ____ experiment.
Mathematics
2 answers:
Nata [24]3 years ago
5 0
(taken from a source)

<span>double blind
</span>
Hope this helped!

:)
Greeley [361]3 years ago
3 0

Answer:double-blind (APEX)

Step-by-step explanation:

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