Well if you aren't watering than I say your odds are very very bad. Plus did you work up the soil at all or just throw seed on the ground? Prep work and maintenance after the seeding is the most important part. Anyone can throw seed on dirt...getting it to grow takes work.
Former PCOIC for the US Air Force
Former Owner Green with Envy Lawn & Landscape
Currently Certified PCOIC for
Grass Roots Lawn & Landscape