They will also look at if you have any relatives in the U.S. and their relationship to you. A little common sense and good communications on your plans will often make a big difference in getting your Visa Application approved.
After being denied, sending the same application with the same info is usually a waste of your time and money. Talk with an Immigration Attorney about your chances of success and what you have to do to improve your chances of getting approved.
Please contact a licensed Immigration attorney before you act on your specific situation. Immigration Laws and Federal Regulations are constantly changing and the general information provided can change over time.