According to Nielsen Media Research viewership data, the top television broadcast of all time was the last

Question:

According to Nielsen Media Research viewership data, the top television broadcast of all time was the last episode of M*A*S*H, which aired on February 28, 1983, and was viewed by an estimated 60.2% of all TV households. Assuming this estimate was based on a simple random sample of 1800 TV households, what is the 95% confidence interval for π = the proportion of all TV households who viewed the last episode of M*A*S*H?