oblicz
:): Mając dane : P(A ∪ B) = 5/6 , P (A∩B) = 1/3 , P(B`) = 1/2. Oblicz : P(A),. P(B), P(A | B)
18 lis 13:30
Janek191:
P( B ') = 0,5 ⇒ P( B) = 1 − 0,5 = 0,5
oraz
P( A ∪ B) = P(A) + P( B) − P( A ∩ B)
| | 5 | | 2 | | 3 | | 4 | | 2 | |
P(A) = |
| + |
| − |
| = |
| = |
| |
| | 6 | | 6 | | 6 | | 6 | | 3 | |
| | P( A ∩ B) | | 13 | | 2 | |
P(A I B) = |
| = |
| = |
| |
| | P( B) | | 12 | | 3 | |
18 lis 14:21