An Economist Is Interested in Studying the Incomes of Consumers

question 33

Multiple Choice

An economist is interested in studying the incomes of consumers in a particular 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:

Ancillary Services

Supplementary services provided by companies that are not primary to their main business but enhance or support the overall consumer experience.

Ultimate Consumer

The ultimate consumer refers to the final buyer or user of a product or service who purchases it for personal, not business, use.

For-Profit Businesses

Businesses that are primarily focused on generating profits for their owners and shareholders.

Reseller Goods

Products that are bought and then sold by a business without any modification to the original product.