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Posted by on Friday, October 19, 2007 at 9:07pm.

Suppose the probability that a construction company will be awarded certain contract is .25, the probability that it will be awarded a second contract is .21, and the probability that it will get both contracts is .13. What is the probability that the company will win at least on of the two contracts?

  • math - , Friday, October 19, 2007 at 9:35pm

    there are 3 scenarios

    1. win the first, lose the second ---> .25(.79) = ...

    2. lose the first, win the second ---> .75(.21) = ...

    3. win the first, win the second ---> .25(.21) = ....

    add them up

  • math--REINY - , Saturday, October 20, 2007 at 1:14pm

    What about the number given, .13 for get both contracts? Wouldn't that contradict the third scenerio?

  • math - , Tuesday, April 22, 2014 at 5:55pm

    .33

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