Just a note -- do you have a source for the sperm living two days outside the testes? Everything I've read on the subject indicates that in the female body, sperm have been observed to live for an average of 2-3 days, with six to seven days (http://www.managingcontraception.com/QA/show_item.php?item=1012&type=qna) being the observed maximum (though that would be a more rare phenomenon).
Re: I dont know the Statistics, but...
Just a note -- do you have a source for the sperm living two days outside the testes? Everything I've read on the subject indicates that in the female body, sperm have been observed to live for an average of 2-3 days, with six to seven days (http://www.managingcontraception.com/QA/show_item.php?item=1012&type=qna) being the observed maximum (though that would be a more rare phenomenon).