Let X be a random variable with the following probability distribution. Value x of X P(X=x) -10 0.40 0.15 10 0.20 20 0.25 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. ? E (x) = 0 (b) Find the variance Var(X) of X. Var(x) = (0

Q: Let X be a random variable with the following probability distribution. A) Find the expectation E(X)…

A: Given data, X P(X=x) -2 0.25 -1 0.15 0 0.35 1 0.25

Q: Let X be a random variable with the following probability distribution. Question table Value x of X…

A: E[X] = ∑xP(x)

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 0.30 10…

A:

Q: Let x be a random variable with the following probability distribution. Value x of X P(X=x) -1 0.25…

A:

Q: (a) Find the expectation E (X) of X. E (X) = [] (b) Find the variance Var(X) of X. Varlx) = D

A: The following table shows the provided outputs of the discrete random variables, along with the…

Q: Let X   be a random variable with the following probability distribution. Question table Value…

A: 20 0.3 6 400 120 30 0.05 1.5 900 45 40 0.4 16 1600 640 50 0.15 7.5 2500 375 60 0.1 6 3600…

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A:

Q: (a) Find the expectation E (X) of X. E (x) = | %3D (b) Find the variance Var(X) of X.

A: The E(X) is defined as E(X) = ∑x.P(X = x) And variance of X is  V(X) = E(X2) - (E(X))2

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A: Solution-: We have following table: X P(X=x) 1 0.05 2 0.85 3 0.05 4 0.05 We find, (a)…

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A: Given : X P (X) 0 14 2 18 -2 14 4 18 -4 14

Q: Let X be a random variable with the following probability distribution.  Value x of X.…

A: Given data, x P(X=x) 0 0.30 10 0.05 20 0.20 30 0.05 40 0.35 50 0.05

Q: 9- If E denotes the expectation the variance of a random variable X is denoted as? a) O E(X2) b) O…

A: Expected value = E(X)

Q: The table below is the joint probability distribution of X and Y. y fxy(x.y) -1 -2 1/8 -0.5 -1 1/4…

A: The joint probability distribution can be represented as:

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 0.05…

A: Given: Let X be a random variable .

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Q: Let X be a random varlable with the following probability distribution. Value x of X P (X=x) 10 0.10…

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Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 30 0.45…

A: Let X be the random variable having probability distribution is,  X P(X=x)  30 0.45 40 0.15…

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A: From the provided information, The probability distribution is as follow: x P (X = x) 0…

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Q: The table below is the joint probability distribution of X and Y. y fxy(x.y) -1 -2 1/8 -0.5 -1 1/4…

A: The joint probability distribution table can also be represented as:   The marginal distribution of…

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A: E[x] = ∑xp(x)

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A: Given,E denotes the expectation .

Q: (a) Find the expectation E (X) of X. E (x) = [] (b) Find the variance Var(X) of X. Var(x) = D %3D

A: Here given discrete probability distribution of X

Q: Let X be a random variable with the following probability distribution. Value x of X P(X=x) 30 0.40…

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Q: Let X be a random variable with the following probability distribution. Value  x  of  X P(X=x) -2…

A: Given, X P(X=x) -2 0.25 -1 0.20 0 0.40 1 0.10 2 0.05

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Q: Let X be a random variable with the following probability distribution. Value x of X P (X=x) 20 0.10…

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