A Study Demonstrates That the Number of Cigarettes Smoked Per

question 60

Multiple Choice

A study demonstrates that the number of cigarettes smoked per day is significantly correlated with the number of respiratory infections experienced by young adults.This observation suggests that

• A) cigarette smoking causes respiratory infections.
• B) cigarette smoking does not cause respiratory infections.
• C) cigarette smoking causes some respiratory infections but not others.
• D) the data do not allow inferences about causation.

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Definitions:

Birth Rates

The number of live births per thousand people in a population within a given year.

World's Population

The total number of people living on Earth at a given time, continuously changing due to birth rates, death rates, and migration patterns.

Cervical Cap

A small, cup-shaped contraceptive device made of silicone or latex that fits over the cervix to prevent pregnancy by blocking sperm from entering the uterus.

Douche

A method of washing or cleaning out a body cavity, vaginal canal, or another bodily part with a stream of fluid.