An Urban Planning Group Is Interested in Estimating the Difference

question 15

Multiple Choice

An urban planning group is interested in estimating the difference in mean household income between two neighbourhoods. They obtain the following 95% confidence interval: (-5693, -4107)
Which of the following is true?

• A) This is a pooled t-confidence interval.
• B) There is no significant difference in the mean household incomes between the two neighbourhoods.
• C) There is a significant difference in the mean household incomes between the two neighbourhoods.
• D) This is a paired t-confidence interval and there is no significant difference in the mean household incomes between the two neighbourhoods.
• E) This is a paired t-confidence interval and the mean household income of the first neighbourhood is higher than in the second.

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Definitions:

Domestic Producers

Manufacturers or suppliers that produce goods or services within a country's borders, contributing to the domestic economy.

Foreign Competitors

Companies based in another country that compete in the same market as domestic firms, often influencing pricing, innovation, and market share.

NAFTA

The North American Free Trade Agreement, a treaty entered into by the United States, Canada, and Mexico; it aimed at eliminating trade barriers between the three countries.

Multilateral Approach

A strategy involving multiple countries working together on a given issue or project, often used in international relations, trade agreements, and environmental policies.