A Researcher Asks Random Samples of Residents of Two Separate

question 34

Multiple Choice

A researcher asks random samples of residents of two separate counties as to whether they had purchased organically grown food in the last three months. He wants to determine whether the proportion of residents of one county who purchase organically grown food is greater than the proportion of residents of the second county who purchase organically grown food. Choose the appropriate test and name the population(s) .

• A)One-proportion z-test; the population is all residents of a state.
• B)One-proportion z-test; the population is all residents of the first county.
• C)Two-proportion z-test; one population is all residents of the first county and the other population is residents of the second county.
• D)Two-proportion z-test; one population is all adults who buy organically grown food and the other population is all adults who do not buy organically grown food.

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Definitions:

Falling

The process or action of moving downwards, typically used in economics to describe a decrease in prices or values.

Short Run

In economics, the short run refers to a period during which at least one of a firm's inputs cannot be changed, limiting its capacity to adjust to demand changes.

Long Run

A period during which all factors of production and costs are variable, allowing full adjustment to any change in market conditions.

Average-Total-Cost Curve

A graphical representation showing the relationship between the average total cost of producing a good and the quantity of the good produced.