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What is the probability that events A and B both occur? (1)

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Director
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What is the probability that events A and B both occur? (1) [#permalink] New post 13 Dec 2003, 20:46
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E

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What is the probability that events A and B both occur?

(1) The probability that event A occurs is 0.8.
(2) The probability that event B occurs is 0.6.
CEO
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Re: G+ DS-19-16 [#permalink] New post 13 Dec 2003, 21:46
kpadma wrote:
What is the probability that events A and B both occur?

(1) The probability that event A occurs is 0.8.
(2) The probability that event B occurs is 0.6.


E

mutually exclusive - different answer

independent - different answer
Director
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 [#permalink] New post 13 Dec 2003, 22:38
Titleist wrote:
say "EEEEEEEEEEEEEE"


:lol: :lol: :lol: :lol: :lol:
Senior Manager
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 [#permalink] New post 14 Dec 2003, 06:06
E

the question is similar to the ones like "what is the interest on 1000 in 3 years at 5%" .. we don't know whether it is simple or compound interest.
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 [#permalink] New post 14 Dec 2003, 06:12
Could someone kind enough to solve the question for
mutually exclusive and independent types.
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 [#permalink] New post 14 Dec 2003, 09:43
When the events are mutualy exclusive it means that the occurence of A excludes or precludes , if you want, the occurence of B or they can not happen both at the same time. In other words there is not intersection of the two circles if you use Venn diagrams. If the events are independent then it means that they can both occur at the same time and the prob is 0.8x0.6=0.48. In this case it is not provided if the events are mutually exclusive or not so we can not say the prob of both A and B occuring at the same time.
  [#permalink] 14 Dec 2003, 09:43
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What is the probability that events A and B both occur? (1)

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