the probability mass function of a discrete random variable X representing the number of bicycles available at a docking station each morning was introduced. This p.m.f. is repeated here, in Table 2. Table 2 The p.m.f. of X 2 3 4 5 6. p(x) 0.3 0.2 0.2 0.1 0.1 0.05 0.05 (i) What is the mean number of bicycles available at the docking station each morning?

If a binomial experiment has probability p success, then the probability of failure is ____________________. The probability of getting exactly r successes in n trials of this experiment is C(_________, _________)p (1p)