A real estate agent believes that the mean home price in the northern part of a county is higher than the mean price in the southern part of the county and would like to test the claim. A simple random sample of housing prices is taken from each region. The results are shown below

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Author:Amos Gilat
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A real estate agent believes that the mean home price in the northern part of a county is higher than the mean price in the southern part of the county and would like to test the claim. A simple random sample of housing prices is taken from each region. The results are shown below.

Southern Northern
154.889 167.833
354.458 521.912
Mean
Variance
Observations
18
18
Pooled Variance
438.185
Hypothesized Mean Difference
af
34
t Stat
P(Tc+t) one-tail
t Critical one-tail
1.885
0.036
1.691
p= Ex:
0.072
P(T<«t) two-tail
t Critical two-tail
Confidence Level
2.032
95%
Degrees of freedom: df
Point estimate for the southern part of the county: T1 = Ex: 1.234
Point estimate for the northern part of the county. T2
2.
Transcribed Image Text:Southern Northern 154.889 167.833 354.458 521.912 Mean Variance Observations 18 18 Pooled Variance 438.185 Hypothesized Mean Difference af 34 t Stat P(Tc+t) one-tail t Critical one-tail 1.885 0.036 1.691 p= Ex: 0.072 P(T<«t) two-tail t Critical two-tail Confidence Level 2.032 95% Degrees of freedom: df Point estimate for the southern part of the county: T1 = Ex: 1.234 Point estimate for the northern part of the county. T2 2.
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