2004 Suzuki Aerio humming noise

I have a 2004 Suzuki Aerio sx w/70000 miles on it. I have a loud humming noise coming from the rear I believe on the right. Recently I have heard that it could be the wheel bearing, but I was also told that it could be a cv joint. I have looked at the cv joints and the boots are in good condition. I have also heard that bad cv joints usually have a clunking noise associated with them, whereas bearings usually have humming noise associated with them. This leads me to believe that it is a bearing. I am hoping that it is just a bearing since it would be an easier and cheaper repair. I really could use an expert opinion on this. Thanks!