Marital name changing. as a female, how likely are you to follow tradition and change your last name to your husband’s when you get married? this was one of the questions investigated in research published in advances in applied sociology (nov. 2013). according to the study, the probability that an american female will change her last name upon marriage is .9. consider a sample of 25 american females. this is a binomial random variable. how likely is it that 20 or more of these females will change their last name upon marriage?