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1) How can you determine the probability of a fourth event based on probability of three other events?


example if A and B or A and C or B and C the probability is 1/2 and the probability of A and B and C is 1/4, then D based on these is ?

2) Can you explain Poisson random value and give an example perhaps with a coin

3) Please give an example of calculating E(X), E(Y), var


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