The discrete random variable X is defined by the following probability mass function, p(x). 0 2 3 A p(x) 0.03 0.27 0.48 0.15 0.07 Which of the following correctly describes the function, p(), displayed in the table? O The function p(a) gives the probability that the random variable is less than or equal to T, for each value of x given in the first row of the table. The function p(a ) gives the probability that the random variable is equal to @, for each value of x given in the first row of the table. The function p(a ) gives the probability that the random variable is greater than or equal to , for each value of ac given in the first row of the table. What is the probability that X is greater than 2? O 0.22 O 0.78 O 0.15 O 0.31