yes, i think so

Would you like some coffee?
Are you OK?
Would you like some sugar with that?
Are you going to class today?
Is he going to ask her out?
Is the toilet working?

These are the types of questions that you can answer with "Yes, I think so". Questions such as "Do you still wanna run this country?", on the other hand, should be answered with more..uh, conviction, I think.

But what do I know,huh? I mean, you ever run a country before, Jibam? No? So just go sit on the sidelines and shaddap! Kapish?