Explain the Completely Randomized Design

question 117

Multiple Choice

Explain the Completely Randomized Design
-A drug company wanted to test a new depression medication. The researchers found 600 adults aged 25-35 and randomly assigned them to two groups. The first group received the new drug, while the second received a placebo. After one month of treatment, the percentage of each group whose depression symptoms decreased was recorded and compared. What is the response variable in this experiment

• A) the percentage who had decreased depression symptoms
• B) the type of drug (medication or placebo)
• C) the 600 adults aged 25-35
• D) the one month treatment time

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