Question 1 : Suppose that we toss 5 fair coins and re-toss all the ones that come up tails. Let X be the number of of coins that come up heads on the first toss and Y be the number of re-tossed coins that come up heads on the second toss. a) Determine the joint distribution of X and Y. Find E(X+Y). b) Find a formula for E(YX).

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A: Formula : E(X) = ΣX*P(X)

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A: We have given that  The random variables X and Y have the joint pdf given by fXY(x, y) = e-x.…

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A: n1 = 16n2 = 14 x1 = 109.5x2 = 99.36 s1 = 15.41s2 =11.57

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