Question: A real estate developer is considering investing in a shopping mall on the outskirts of Atlanta, GA. Three parcels of land are being evaluated. Of particular importance is the income in the area surrounding the proposed mall. A random sample of four families is selected near each proposed mall. Following are the sample results. At the .05 significance level, can the developer conclude there is difference in the mean income? Use the usual five-step hypothesis testing procedure.

Southwyck Area($000) Franklin Park($000) Old Orchard($000)