중간고사 기출 2010.pdf

중간고사 기출 2010.pdf - (2010-S(2010 7 8 40 4 1(a...

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- 1 - 점 각 40 ( 4 ) 1.    이이고    으으로 주어져 있있을을 때 다음음을을 구하시오 , . 가 독립일일 때 (a) A,B , 는? 가 상호배반적일일 때 (b) A,B , 는? (c)    일일 때, 는? 어떤 검사기기 의의 공급업자자는 당해검사기기가 높은은 신인인도 를 가지고 있있는 2. (testing device) (reliability) 당해기기가 부속품에 결함이이 있있다는 것을을 알리는 사건 으으로 부속품에 결함이이 있있는 사 , A , B 건 으으로 정의의할 때 ,      라고 주장장하고 있있다 만일일 이이 기기를 사용하여 전국에 . 재고 중 의의 부속품이이 결함이이 있있는 재고를 검사한다고 할 때 5% , (a) 를 구하라. 만일일 (b)    가 되기를 원원한다면   의의 값은은 어느 정도가 되어야 하는가? 경제통계학 (2010-S) 학과 : 서울울대학교 경제학부 중 간 고 사 학번 : 표학길 교수 월월 일일 (2010 7 8 ) 이이름 : (a)               (1 ) (b)              (1 ) (c)                      (2 ) (a) P [ B | A ] = P ( A B ) P ( A ) = P ( A B ) P ( A B ) + P ( A B C ) = P ( A | B ) P ( B ) P ( A | B ) P ( B ) + P ( A | B C ) P ( B C ) = 0.95 0.05 0.95 0.05 + 0.05 0.9 5 = 1 2 (2 )
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- 2 - 3.       ( , 사이이의의 고정된 상수 로 주어져있있고 0 1 ) , ∙ 
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