All applicants who are not citizens or permanent residents of the United States must complete the Financial Information Worksheet for International Students. (Pg. 7). The worksheet must be accompanied by a current bank statement from the sponsor’s financial institution.
if u a good enough, don't worry, they will give you full financial support if admitted.
if not, they might give you some financial support to complement what you have already if they still want you, in this case, financial statement is of importance.