A double-blind placebo-controlled study is A) an idea ...

[sdfghj]

A double-blind placebo-controlled study is
 
  A) an idea generated by scientists based on their observations.
  B) research in which neither the subjects nor the scientists know which group received the treatment and which group received a placebo.
  C) a stepwise process used by scientists to identify effective placebos.
  D) research that involves looking at factors in two or more groups of subjects to see if there is a relationship to certain outcomes.

Question 2

Which of the following people might not benefit from a vitamin supplement?
 
  A) individuals who don't drink milk or go out in the sun
  B) strict vegetarians
  C) women of childbearing age
  D) individuals who regularly eat fortified foods

[6ana001]

Answer to Question 1

B

Answer to Question 2

D

[sdfghj]

Thank you!

[6ana001]

Always glad to help...