Use the Following Information to Answer the Question

question 53

Multiple Choice

Use the following information to answer the question. Which treatment is most effective at treating carpet stains: vinegar, ammonia, or hydrogen peroxide? In a study, researchers randomly assigned 55 carpet samples with identical stains to one of three groups. Depending on which group they were assigned to, each carpet sample received a home remedy of water mixed with vinegar, ammonia, or hydrogen peroxide. Afterwards, each carpet sample was examined and any remaining stain was measured. Researchers found that a vinegar and water mixture produced better results than both ammonia and hydrogen peroxide.
-Was this a controlled experiment or an observational study?

• A)Observational Study
• B)Controlled Experiment

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Definitions:

Putting Effort

The act of applying mental or physical energy towards achieving specific tasks, goals, or outcomes, often associated with determination and hard work.

Little League

A youth sports organization that hosts baseball and softball leagues for children and adolescents.

Inherent Need

A fundamental psychological or physiological requirement essential for the well-being and survival of an individual.

Achievement Behavior

Actions directed towards attaining a specific standard of excellence or meeting certain goals, often motivated by a desire for success.