Author Question: Approximately what percentage of U.S. adults is affected by Alzheimer's disease after age 65? A) ... (Read 105 times)

09madisonrousseau09 · **on:** Aug 21, 2018

Approximately what percentage of U.S. adults is affected by Alzheimer's disease after age 65?
A) 0.5
B) 5
C) 12
D) 33

Question 2

What is a benefit of using placebos in an experiment?
A) All of the subjects are similar.
B) All of the subjects receive pills.
C) Neither the subjects nor the researchers know who is receiving treatment.
D) One group of subjects receives a treatment and the other group receives nothing.