that is a simple probability,

送交者: steven 于 2010-04-21, 12:32:06:

回答: 这句话尤其SB: with two engines, you're twice as likely.. 由 tinaliang 于 2010-04-21, 12:12:35:

Let A is be the event of engine failure, and P(A) is its probability, we have A1 is the event of first engine failure, and A2 is the second engine failure, the total probability P(A1|A2) = P(A1) + P(A2) = 2P(A). What is wrong with that?

所有跟贴:

see my post. less stressed engines less likely to fail. - tinaliang (63 bytes) 2010-04-21, 12:40:51 (433778)
- why it is less stressed? (无内容) - steven (0 bytes) 2010-04-21, 13:13:17 (433804)
  - 功率冗余。 (无内容) - tinaliang (0 bytes) 2010-04-21, 13:16:22 (433809)
    - Not that many jet engine failure are stresse related. - steven (81 bytes) 2010-04-21, 13:30:33 (433818)
      - ok. now tell us twine engines fails twice as many as single, would you? (无内容) - tinaliang (0 bytes) 2010-04-21, 13:35:41 (433822)

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