Can you please help me with this? Having issues.

2. 3. Determine the point estimate of the population proportion, the margin of error and the number of individuals in the sample with the specified characteristic, xfor the given sample size: Confidence Interval Lower Bound = 0.201, Upper Bound = 0.249, n = 1200. Round answers to 3 decimal places as needed. R {'11 13> II A researcher wishes to estimate the proportion of households that have broadband Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03 with 99% confidence if (a) She uses a 2009 estimate of 0.635 obtained from the National Telecommunications and Information Administration? (b) She does not use any prior estimates