Hey guys be careful with the answers, I have been getting most of my answers wrong. And please can you send the answer a little bit faster please ??

A pollster is hired to determine the percentage of New Jersey residents favoring the legalization of marijuana. A preliminary poll found that 288 out of 400 people were in favor of legalizing marijuana. If we require 95% confidence that the estimated value is within 1% of the true value, how many more people should they poll