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Elementary Statistics: Picturing the World | 6th Edition | ISBN: 9780321911216 | Authors: Ron Larson; Betsy Farber
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Solved: Observational Study or Experiment? In Exercise,

Chapter 1, Problem 12E

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QUESTION:

Problem 12E

Observational Study or Experiment? In Exercise, determine whether the study is an observational study or an experiment. Explain.

Researchers demonstrated in people at risk for increased cardiovascular disease that 2000 milligrams per day of acetyl-L-carnitine over a 24-week period lowered blood pressure and improved insulin resistance. (Source: American Heart Association)

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QUESTION:

Problem 12E

Observational Study or Experiment? In Exercise, determine whether the study is an observational study or an experiment. Explain.

Researchers demonstrated in people at risk for increased cardiovascular disease that 2000 milligrams per day of acetyl-L-carnitine over a 24-week period lowered blood pressure and improved insulin resistance. (Source: American Heart Association)

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(a)

We are asked to find whether the study is an observational study or an experiment.

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