John Would Like to Conduct a Survey in His Neighborhood

question 43

Multiple Choice

John would like to conduct a survey in his neighborhood to get homeowners' opinion on Delmarva proposal to switch to natural gas. Which of the following is an example of a stratified sample?

• A) John randomly chooses three streets and selects every third house on those streets.
• B) John selects the first 25 homes that he passes as he walks into the entrance of the development.
• C) John selects every third house on each street.
• D) John divides the population into two-story, split-level, and ranch houses. Then, he selects a proportional amount of houses from each group.

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Definitions:

Regional Monopolies

Companies or entities that exclusively control the supply of a particular good or service in a specific geographic area.

OPEC Cartel

The Organization of the Petroleum Exporting Countries, a group of oil-producing nations that coordinates policies and prices of petroleum.

World Supply

The total amount of a particular good or service that is available for purchase on the global market.

Quadrupled

To increase or be increased fourfold, a term often used in finance, demography, and general quantitative analysis to describe significant growth or expansion.