The new Health-Watch facility is targeted to serve seven census tracts in Erie, Pennsylvania, whose latitudes and longitudes are shown in Table 13.1, along with the population in each census tract (in thousands). Customers will travel from the seven census-tract centers to the new facility when they need health care. What is the target area’s center of gravity for the Health-Watch medical facility?

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TABLE 13.1 Census Tract 15 16 17 25 26 27 28 Total LOCATION DATA AND CALCULATIONS FOR HEALTH-WATCH Population Latitude Longitude Population x Latitude 2,711 42.134 -80.041 114.225.27 4,161 42.129 -80.023 175,298.77 2,988 42.122 -80.055 2,512 42.112 -80.066 4,342 42.117 -80.052 6,687 42.116 -80.023 6,789 42.107 -80.051 30,190 125.860.54 105,785.34 182,872.01 281,629.69 285,864.42 1,271,536.04 Population × Longitude x -216,991.15 -332,975.70 -239,204.34 -201,125.79 -347,585.78 -535,113.80 -543,466.24 -2,416,462.80