Help please: Flip a fair coin 3 times. Let X be the number of Heads. Then flip the same coin X times and let Y be the numbers of Heads. (a) Find the joint PMF. (b) Find the marginal PMFs for X and Y . (c) Find Var(X|Y = 2).

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A: T=1T=4A=20.21A=50.290.34

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A: It is given that Red balls = 8White balls = 4Total balls = 12

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A: XYZA192929B142834

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A:

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A: P(A  B)=0.4P(A B)=0.2

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A: According to the Bartleby guidelines experts solve only one question and rest can be reposted.

Q: 8. Help plz

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Q: Given f(x) = { (x2+1)/30; x = -2,-1,0,1,2  0; elsewhere ] Find the mean and variance of X.

A: X-2-1012f(x)

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A: The given graph is parallel to -axis, So we are going to assume that the random variable  is plotted…

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A:

Q: 14. Seven cards are chosen from a well-shuffled deck of 52 playing cards. In how many selections do…

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Q: a) Find k b) Calculate P(X ≥ 1)

A: Here given probability density function of X .

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Q: About 2% of the bulbs produced by a company data are defective. A merchant receives a lot of 500 of…

A: n=500p=0.02

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