It's just a 50/50 chance man you just hope for the males although i hear certain conditions do promote the plant to grow as a female.... You COULD plant 4 seeds and get 4 females.. or 4 males, it's just a 50/50 chance.
But like every1 is sayin dont take any chances b/c the pollen will travel foreva, just rip 'em out and dispose of them in a safe spot.