looks right
Posted by John Vidale on April 14, 2008 at 20:27:31:

think of the converse

1/15 chance of no quake in the North
1/30 chance of no quake in the south

1/500 chance of no quake either place

(1 - 1/15 X 1/30) -> 99.8 chance of a quake.

Follow Ups:
     ● Re: looks right-OK, I was wrong - heartland chris  05:11:36 - 4/17/2008  (73685)  (0)
     ● Re: looks right - Glen  20:36:40 - 4/14/2008  (73677)  (1)
        ● 6.7 is not that big - John Vidale  22:23:16 - 4/14/2008  (73679)  (1)
           ● Re: 6.7 is not that big - Todd  00:11:56 - 4/15/2008  (73680)  (1)
              ● SoCal != urban quake - John Vidale  10:02:54 - 4/15/2008  (73682)  (1)
                 ● landers damage - heartland chris  12:45:40 - 4/15/2008  (73684)  (0)