Well, your site says thirteen. But that doesn't really make any sense. if you don't count judy in the final answer, you can't really count her in the fractions either.
yuo konw, trehe was a sudty dnoe swhonig taht as lnog as all the ltrtees of the wrod are terhe and the fsrit and lsat lrtetes of the wrod dn'ot cagnhe, tehn you sulohd siltl be albe to raed it bcuaese yuor mnid feixs the wrdos. Itesnrsetnig, no?