consider the probability distribution of x, where x is the number of times a college graduate changed majors. x 0 1 2 3 4 5 6 7 8 p(x) 0.135 0.271 0.271 0.180 0.090 0.036 0.012 0.003 0.002 what is the probability that a randomly selected college graduate has changed majors more than two times?