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Unformatted text preview: 1 ) ( 43 1 ) (from drawer s view) (4) (a) Ans: 0.600 P (under 20 yrs  on the technical staﬀ) = (31 + 59) (31 + 59 + 45 + 15) = 0 . 600 (b) Ans: 0.060 P (over 20 yrs ∩ on the nontechnical staﬀ ∩ plans to retire at age 65) = 12 (31 + 59 + 5 + 25 + 45 + 15 + 12 + 8) = 0 . 060 (5) P ( A ) = ( 2 2 ) ( 6 2 ) = 1 15 P ( B ) = ( 4 2 ) ( 6 2 ) = 6 15 P ( C ) = ( 4 1 )( 2 1 ) + ( 4 2 )( 2 ) ( 6 2 ) = 14 15 also equal to P ( A c ) P ( B  C ) = P ( B ∩ C ) P ( C ) = P ( B ) P ( C ) = 6 14 because B is a subset of C. * * * 1 ATChan 2008...
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This note was uploaded on 12/22/2009 for the course ISOM ISOM111 taught by Professor Anthonychan during the Fall '09 term at HKUST.
 Fall '09
 AnthonyChan

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