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Unformatted text preview: from company A is 0.8, and the probability that he gets an offer from company B is 0.6. If, on the other hand, he believes that the probability that he will get offers from both companies is 0.5, Then: (a) What is the probability that he will get at least one offer from these two companies? Ans: ( 29 ( 29 ( 29 ( 29 9 . 5 . 6 . 8 . =+ = + = B A P B P A P B A P (b) What is the probability that he will not get any offer from these two companies? Ans: ( 29 [ ] ( 29 1 . 9 . 1 1 ' == = B A P B A P (c) Define two events A={John will get an offer from company A}, B={John will get an offer from company B}. Are the two events independent, why? Ans: No, they are not independent because ( 29 ( 29 ( 29 833 . 6 . 5 .  = = = B P B A P B A P , but ( 29 80 . = A P ....
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 Spring '11
 Qiu

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