Will this work?

[Rusty Trichome]

... I germinated the seed and got a sprout which I transfered to a cup full of regular dirt.

We use soil for growing cannabis, not dirt. Dirt is the crap that's scraped from under your fingernails.

I placed the cup on my windowsil and its been growning pretty rapidly.

This too, shall pass. As it grows, it will start freaking out about your turning the lights on and off all night, uneven light from the window...she doesn't stand much of a chance. If you want to grow smokable bud...you are going to have to invest in more than a cup of soil and a sunny window.

what are the odds that Im actually going to get a smokeable plant.

100% you'll get something. 100% smokable. 99% doubtful it will have flavor or effect.

I know female plants get the buds but what is the chance that my plant is a)female and b) going to produce without male/female interaction?

A) Despite Skarlet's colorful theory, it could have been a co-op product, or a commercial operation...no way to tell it's origins. 50/50 chance.
B) It's the male - female interaction that makes seeds. (male pollen pollinates the female egg, and the female develops the embryo) Other than that, males are unnecessary in the cannabis growroom, and culled upon identification as such.