Racial Makeup of Two Cities Dallas, Texas, and Stafford, Texas, are numbers 57 and 58, respectively, on the top 100 most racially diverse cities in the United States with 35.6% of the population being white. A random sample of 300 residents from each city was surveyed, and the results are listed below. At the 0.01 level of significance, is there sufficient evidence to conclude a difference in the proportions of nonwhite residents in these two cities? Dallas: 98 of 300 surveyed were white Stafford: 120 of 300 surveyed were white