An Economist Is Interested in Studying the Incomes of Consumers

question 95

Multiple Choice

An economist is interested in studying the incomes of consumers in a country.The population standard deviation is known to be $1,000.A random sample of 50 individuals resulted in a mean income of $15,000.What total sample size would the economist need to use for a 95% confidence interval if the width of the interval should not be more than $100?

• A)n = 1537
• B)n = 385
• C)n = 40
• D)n = 20

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Definitions:

Short-Run Aggregate Supply

The total amount of goods and services that producers in an economy are willing and able to supply at a given overall price level in a short period.

Expected Price Level

The anticipated average cost of goods and services in an economy over a specific time period.

Aggregate Demand Curve

A graphical representation showing the relationship between the overall price level in an economy and the total demand for goods and services.

Potential Output

The maximum amount of goods and services an economy can produce when it is most efficiently utilizing its resources.