A developer is considering building a mall. The potential location of the mall is close to a neighborhood, which consists of 100 neighborhood blocks (organized in the grid below based on number of minutes it would take to drive to the mall from that block). In some blocks, a large percentage of households may be interested in using the mall, but in other blocks only a small percentage households may be interested. The developer is not sure that building the mall is worth the expense. She has decided to survey 10 blocks in the neighborhood, and use this information to estimate the percentage of households interested in using