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36. For any two events A and B
P (A' ∩ B) = P (B) - P (A ∩ B)
P(A ∪ B) = P(A)+ P(B) -P(A ∩ B)
P(A/B) ≤ P (A).
All of these
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37. Which of the following is correct?
P (A ∪ B/C) = P (A/C) + P (B/C) - P (A ∩ B/C)
P(A ∩ B/C) + P (A ∩ B/C) = P (A/C)
If A and B are independent, then A and B' are also independent
38. Given two events A and BandP(A) = 1/4, P(B/A) = 1/2and P(A/B) = 1/4
State that following is true?
A is sub-event of B
P(A/B) = 3/4
P(A/B) + P(A/B') = 1
None of these
39. Let p be the probability that a man aged y will get into an accident in a year. What is the probability that a man among n men of all aged y will get into an accident first?
40. What would be the expectation of the number of failures preceding the first success in an infinite series of independent trials with the constant probability of success p ?
1/p
1/q
q/p
where pi denote probability of occurrence of xiLet q = 1-pThen probabilities of succession 1st, 2nd, 3rd trials are p, qp, q2p,......
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