第1章概率论概要习题解答.pdf
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1( C )
A0 ∈∅ B ∅∈{0} C ∅⊂{0} D∅ {0}
2E A
C
B
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A C C
B BA D CB D D D
3A B P (A) p , P (B ) q, P (A U B) ( D )
A B C D
q 1−q p 1−p
4A B P (A) p , P (B ) q P (A I B ) ( A )
A B C D
p 1−p q 1−q
510 ( D )
1 1 1
A0 B C D
4 8 5
6A, B P (A) 0.75 P (B ) 0.8 P (A U B ) ( B )
A0.45 B0.4 C0.6 D0.55
7500 0.53
500 ( A )
1 2 3 4
A B C D
8 8 8 8
8A, B P (A) 0.7 P (A U B ) 0.88 P (A −B ) ( D )
A0.10 B0.52 C0.42 D0.28
9A, B P (A U B ) 0.76 , P (B ) 0.4 P (A) =( C )
A0.16 B0.36 C0.4 D0.6
1020% 5
( D )
1
A 0.23 B0.23 ×0.82 C 0.23 ×10 D 10×0.23 ×0.82
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