Areal estate developer is considering investing in a shopping mall on the outskirts of atlanta, georgia. 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 0.05 significance level, can the developer conclude there is a difference in the mean income? use the usual six-step hypothesis testing procedure. southwyck area($000)franklin park($000)old orchard($000)6474756871807069766070 78