The Asian Longhorned Beetle Kills Trees by Burrowing Within the Trunk

question 53

Multiple Choice

The Asian longhorned beetle kills trees by burrowing within the trunk and branches and disrupting the sap flow.This beetle favors hardwood trees,such as maple,elm,and ash.A new pesticide will be tested in a major metropolitan city.A statistician designs an experiment for 200 mature maple trees and randomly assigns half of the trees to receive this new pesticide,and the rest of the trees receive a control treatment. Is there any obvious way to improve this experiment to evaluate the effectiveness of this new pesticide?

• A)Yes,stratifying must be used.
• B)Yes,blocking must be used.
• C)No,basic variations have been accounted for.
• D)Yes,matching must be used.
• E)Yes,a placebo is missing.

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Definitions:

Prime Working Age

Refers to the age range typically considered to be most productive and actively engaged in the labor market, often defined as individuals aged 25-54 years old.

Unemployment Rates

A measure of the portion of the workforce that is jobless and actively seeking employment.

Prime Working Age

Generally refers to individuals aged 25-54, who are considered to be in their most productive years in terms of labor force participation.

Labor-Force Participation

The proportion of the working-age population that is working or actively looking for work.