3 Suppose X ~ Po(2) and Y ~ Po(3) are independent Poisson random variables. a Find P(X +Y =4). b Write an expression for P(Y

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3 Suppose X ~ Po(2) and Y ~ Po(3) are independent Poisson random variables.
a Find P(X +Y = 4).
6 Write an expression for P(Y <in (X+Y) = 4) in terms of probabilities of X and Y only.
c Hence calculate P(Y <1n (X +Y) = 4).
d Find P(Y < 1|(X +Y)= 4).
Transcribed Image Text:3 Suppose X ~ Po(2) and Y ~ Po(3) are independent Poisson random variables. a Find P(X +Y = 4). 6 Write an expression for P(Y <in (X+Y) = 4) in terms of probabilities of X and Y only. c Hence calculate P(Y <1n (X +Y) = 4). d Find P(Y < 1|(X +Y)= 4).
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