b. What sample size would be necessary to estimate the population proportion, p, living in poverty in the United States in 2000 with a bound on the error of estimation, B, of 0.05 and assuming p =11.5?

I'm not sure if the below is needed.

State Total Section 18-24 18+ 15-44 65+ 85+ Poverty Proportion United States 288,368,698 28,341,732 215,474,215 125,434,691 35,601,911 4,593,063 11.90