Q1) One indication of how strong real estate market is performing is proportion of properties that sell in less than 30 days after being listed. Of condominiums in a Florida beach community which sold in first six months of 2006, 71 of the 112 sampled had been on market less than 30 days. For first six months of 2007, 20 of the 81 sampled had been on market less than 30 days. Compute the suitable Test Statistic to test hypothesis that the proportion of condominiums that sold within 30 days decreased from 2006 to 2007.