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Question
In order to estimate the difference between the average mortgages in the southern states and the northern states, the following information was gathered.| Southern | Northern | |
| Sample Size | 40 | 45 |
| Sample Mean (in $1,000) | $170 | $175 |
| Sample Standard Deviation (in $1,000) | $5 | $7 |
a. Compute the degrees of freedom for the tdistribution.
b. Develop an interval estimate for the difference between the average of the mortgages in the South and North. Let alpha = 0.05.
Answer
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