Hi, Sandra.
There are some pretty specific requirements when it comes to proof of Florida residency. You can use a bank statement, but the Florida resident discount will only apply to the person named on the bank statement, and it must be mailed to an actual street address (no Post Office boxes) within the two months prior to you purchasing the passes.
The name on your bank statement must correspond to the name on a photo ID. The address does not have ot match, but you must have a drivers' license, passport, or state issued identification card in your name in order to purchase the discounted passes.
There is more information located at
Florida Resident Validation Requirements.
If you don't have a Florida drivers' license, I highly recommend getting a state ID card. You don't have to be a driver to get one, and they are so helpful with things like this!
Thanks so much for your question.