An Economist Is Interested in Studying the Incomes of Consumers

question 114

Multiple Choice

An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the width of the 90% confidence interval?

• A) $232.60
• B) $364.30
• C) $465.23
• D) $728.60

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Definitions:

Respiratory Volumes

Measurements that describe the amount of air in the lungs during various phases of the breathing cycle.

Pulmonary Fibrosis

A lung disease that occurs when lung tissue becomes damaged and scarred, impeding effective gas exchange and breathing.

Chronic Bronchitis

A long-term inflammation of the bronchi in the lungs, often caused by smoking, leading to coughing and difficulty breathing.

Emphysema

A lung condition that is part of chronic obstructive pulmonary disease (COPD), characterized by damage to the air sacs (alveoli), leading to difficulty breathing.