25 Marks A Survey Of Engineering Firms Reveals That 75 Have Their Own Mainframe Computer M 12 Anticipate Purchasi 1 (82.95 KiB) Viewed 36 times
(25 marks) A survey of engineering firms reveals that 75% have their own mainframe computer (M), 12% anticipate purchasing a mainframe computer in the near future (B), and 5% have a mainframe computer and anticipate buying another in the near future. Find the probability that a randomly selected firm: (a) has a mainframe computer or anticipates purchasing one in the near future (4 marks) (b) does not have a mainframe computer and does not anticipate purchasing one in the near future (Hint: consider the Venn diagram of the event) (7 marks)
have one (c) anticipates purchasing a mainframe computer given that it does not currently (7 marks) (d) has a mainframe computer given that it anticipates purchasing one in the near future (7 marks)
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