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:

Physical World

The aspect of the universe that is understood through physical phenomena, including matter and energy, as opposed to the abstract or spiritual realm.

Scientific Revolution

A paradigm shift in which a new scientific theory replaces a problematic paradigm.

Nicolaus Copernicus

A Renaissance mathematician and astronomer who proposed the heliocentric model of the universe, placing the Sun, not the Earth, at the center.

Sun

The star at the center of our solar system, which provides light and heat to Earth, enabling life.