Please help with question 16

The following results were obtained. A. 120 orders were delivered at the wrong time. B. 15 orders were delivered with the wrong items. C. 55 orders were delivered with the wrong item quantities, D. 110 orders were delivered with damaged items. E. 30 orders were delivered to the wrong place. F. 460 orders were delivered with the CORRECT documentation. (NB: Use the letter labels in the list above to denote the events in all expressions given in the questions that follow, e.g. P(D) is the probability of an order being delivered with damaged items). Are these causes of failure mutually exclusive? Explain your answer. 1 AY B E SS U S X2 x2