The Rochester/Monroe County Youth Bureau wants to estimate the proportion of teens (13-18) who have drank alcohol in the last month.Before conducting a random poll in local high schools, RMCYB must determine the number of individuals that should be polled.The poll manager has determined that the margin of error for the poll must be +/- 3.9% with 97% confidence.

How many individuals must be polled if a poll from 2014 found 37.5% of the respondents responded that they have consumed alcohol within the last month?