Does Regular Exercise Decrease the Risk of Cancer? a Researcher

question 52

Multiple Choice

Does regular exercise decrease the risk of cancer? A researcher finds 200 women over 50 who exercise regularly, pairs each with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. This is a

• A) retrospective study
• B) matched experiment
• C) survey
• D) prospective study
• E) randomized experiment

Understand the implications of the assumption of normality in statistical testing and research.

Comprehend the role of mean and standard deviation in describing normal distributions.

Recognize how normal distributions contrast with skewed, bimodal, and theoretical distributions.

Understand the transition from descriptive to inferential statistics through the concept of normal distributions.