calculated

In the Paranormal portion of this forum, a test of a young Russian girl by the name of Natasha Demkina was brought up. And this led to me to wonder how Randi, and others, calculate the odds of success for various paranormal tests. Some I can figure out, but the one with Natasha has me stymied...

I have always been great at math, but unfortunately I'm terrible at statistics, and wish to learn more. This one made me curious as to how it was calculated: From here: http://www.brainyencyclopedia.com/encyclopedia/m/ma/magical_thinking.html (A nice little article btw. Take a look) ;)