Table gives rental and homeowner vacancy rates by U.S. region (source: U.S. Census Bureau) for 5 years.
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Table
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|
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Rental units
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1995
|
1996
|
1997
|
1998
|
1999
|
|
Northeast
|
7.2
|
7.4
|
6.7
|
6.7
|
6.3
|
|
Midwest
|
7.2
|
7.9
|
8.0
|
7.9
|
8.6
|
|
South
|
8.3
|
8.6
|
9.1
|
9.6
|
10.3
|
|
West
|
7.5
|
7.2
|
6.6
|
6.7
|
6.2
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Test at the 0.01 level whether the true rental and homeowner vacancy rates by area are the same for all 5 years. Interpret your results and state any assumptions that were necessary to perform the analysis.