No programmer but I know HTML and dabble in sql server and I catch on quick to things especially topics that intrigue me. I am the type of person that will use the excel functions for efficiency but I want to be able to know how to do it just for the knowledge. Hell I was playing around taking quizzes last night on your site just for the fun on it.

I was always good at math in school but I dropped out before my junior year to start working so I am pretty sure I didn't learn this. I kick myself now because the things I am interested in now math, science, history are all things I didn't pay much attention in school. This may sound silly to some but I actually look forward to my kids bringing home school work asking for help because I want to relearn everything. Anyway I really appreciate the help and the thorough explanation.

BTW I did find the formula on excel for those future readers that want to check their work in excel

=BINOMDIST(2,4,0.55, FALSE)

2 is successes

4 is trials

.55 is probability

true or false is for if probability is cumulative.