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In: Statistics and Probability

The mean area of homes in a certain city built in 2009 was 2438 square feet....

The mean area of homes in a certain city built in 2009 was 2438 square feet. Assume that a simple random sample of 11 homes in the same city in 2010 had a mean area of 2,295 squarefeet, with a deviation of 225 square feet. An insurance company wants to know if the mean area of homes built in 2010 is less than that of homes built in 2009.

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