Author Question: In a double-blind study, the researchers know who is receiving the placebo but the subjects do not. ... (Read 98 times)

HCHenry · **on:** Aug 20, 2018

In a double-blind study, the researchers know who is receiving the placebo but the subjects do not.
a. True
b. False
Indicate whether the statement is true or false

Question 2

Epidemiological studies prove cause-and-effect relationships.
a. True
b. False
Indicate whether the statement is true or false