I think it depends on how specific the hypotheses are (and therefore likely amount of work required to accept/reject each one). Generally speaking, your hypotheses need to be very explicit and very tangible so that you will get a clear result. I write this from the science camp, the soc sci members may have different opinions.
Suffice to say, if you have general hypotheses you asking for trouble insofar as there is likely to be one heck of alot of work. So try to break them down to the lowest possible scale and then you can decide how many you need to address your research question(s).