standard error of sample proportion

Question

A new Rassmussen Report national telephone survey finds that just 32% of American adults favor "sin taxes" on soda and junk food. The survey was based on a sample of 1,000 Americans adults. Based on this survey data, the standard deviation of   or the standard error of sample proportion would be? (considering p=.32)

Answer 1

The standard deviation formula is = √n*p*(1-p)/√n

√1000*.32*(1-.32)/√1000

=√217.6/√1000

=.46648