A Researcher Wants to Study the Relationship Between Lifespan and Cigarette

question 60

Multiple Choice

A researcher wants to study the relationship between lifespan and cigarette smoking.For this study,he cannot ethically manipulate people to smoke cigarettes,so the researcher must rely on a correlational study.Based on the correlational approach,which of the following statements would be an appropriate conclusion?

• A) Smoking cigarettes is related to decreases in lifespan.
• B) A hard,stressful life causes people to smoke.
• C) Shorter lifespan and cigarette smoking cause the other in equal proportions.
• D) Cigarette smoking causes people to die young.

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Definitions:

Double Declining-balance

An accelerated method of depreciation where an asset's book value is reduced at double the rate of its straight-line depreciation.

Accelerated Depreciation

A method of depreciation used for accounting or income tax purposes that allows higher deductions in the earlier years of the useful life of an asset.

Depreciation Expense

The systematic allocation of the cost of a tangible asset over its useful life, reflecting the asset's consumption, wear and tear, or obsolescence.

Residual Value

The estimated value of an asset at the end of its useful life, important in calculating depreciation and lease contracts.