A Study Is Conducted to Assess the Relationship Between Smoking

question 75

Multiple Choice

A study is conducted to assess the relationship between smoking status and forced expiratory volume in one second (FEV₁) .  Subjects are randomly selected and categorized based on smoking status.  Group A consists of 200 nonsmokers, group B consists of 200 light smokers (1-7 cigarettes per day) , group C consists of 200 moderate smokers (8-22 cigarettes per day) , and group D consists of 200 heavy smokers (23+ cigarettes per day) .  FEV₁ is quantitatively measured in all participants using properly calibrated office spirometers.  Which of the following is the most appropriate statistical method to compare the mean FEV₁ results among all 4 groups?

• A)Analysis of variance
• B)Chi-square test
• C)Meta-analysis
• D)Multiple logistic regression
• E)Pearson correlation coefficient
• F)Two-sample t-test

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Definitions:

Accounting Differences

Discrepancies that arise between accounting practices, often due to different standards or interpretations.

Unrealized Gain/Loss

Gains or losses on investments that the company holds but has not yet sold, and thus they have not realized the gains or losses.

Fair Value

An estimated market price of an asset or liability, reflecting the value for which it could be exchanged or settled between knowledgeable, willing parties.

Bond Investment

Buying bonds as a way to generate income through interest payments, representing a loan from the investor to the issuer.