I have a number of outlets where there is no power coming to them because the Hot and the Ground wire are reversed. What is the best way to fix this problem?

 

If this truly is your problem, the ONLY fix is to find and correct the problem. That would mean opening up every receptacle on the circuit and making sure that it properly wired, and opening the main panel and any other junction boxes to verify the wiring at those locations.

I doubt very much you have the hot and the ground reversed. I suspect that you have en open neutral, and that you don;t know how to interpret the results that your tester is telling you.

Did this just start happening all of a sudden? Did these receptacles ever work? What was going on (if anything) when they stopped working? Have you used a two wire tester to test the receptacles, testing between the hot wire and the ground, the hot wire and the neutral, and between the neutral wire and the ground? How old is your house? Are these receptacles even grounded to begin with?

 

Explain what color wires are connected to what in each receptacle in question.

Black (Hot) = brass terminal

White (neutral) = Silver terminal

bare ground = green grounding screw

 

As already alluded to, one of the glitches using the plug in testers is that an open neutral can display as hot/neut reverse.

Open neutral is fairly common problem...in other words if you have a problem, open neutral would be high on the list. Not that you should have any problems very often.

Hot/neut reverse is not something that just happens all of a sudden. It means someone screwed up very badly when first installing that circuit.

 

Your problem is most likely an open neutral. The problem could be in any of the dead receptacles or any working receptacle. light switch. fixture or junction box on the circuit.
If you know the layout of the circuit the problem is either in the last working box or ther first dead box.