nev322
17.12.2021 •
Mathematics
4. |
Let A and B be two events such that P( A\B)= 0.4 , P(AUB) = 0.45 and
P(B)=0.75, where B is the complementary event of B.
(a) Find P(An B) and P(A).
(b) Are events A and B independent? Justify your answer.
(10 marks)
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Ответ:
We are given:
P(A or B) = 0.75
P(B) = 0.25
P(A / B) = 0.5
We may calculate:
P(A / B) = P(A and B) / P(B)
0.50 = P(A and B) / 0.25
So, P(A and B) = 0.125
Ответ:
SZA
Step-by-step explanation: