In Order to Estimate the Difference Between the Average Mortgages

question 26

Short Answer

In order to estimate the difference between the average mortgages in the southern and the northern states of the United States, the following information was gathered.
$\begin{array}{lcc}&\text { South }&\text { North }\\\text { Sample Size } & 40 & 45 \\\text { Sample Mean in } \$ 1,000) & \$ 170 & \$ 175 \\\text { Sample Standard Deviation in } \$ 1,000) & \$ 5 & \$ 7\end{array}$
a. Compute the degrees of freedom for the t distribution.
b. Develop an interval estimate for the difference between the average of the mortgages in the South and North. Let Alpha = 0.03.

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Definitions:

Genetic Drift

A mechanism of evolution involving random fluctuations in gene frequencies within a population that can lead to significant genetic changes over time.

Mutation

A mutation is any change to the genomic sequence of an organism.

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring, a key mechanism of evolution proposed by Charles Darwin.

Landscape Genetics

An interdisciplinary field that combines landscape ecology and population genetics to study the effects of the environment on the genetic variation of species.