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
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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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- Let X be a random variable with the following probability distribution Value x of X P(X=x) 20 30 40 50 60 70 0.30 0.10 0.05 0.40 0.10 0.05 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) =Let X be a random variable with the following probability distribution. Value x of X P(X=x) -2 0.25 -1 0.20 0 0.40 1 0.10 2 0.05 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E(X) of (X). E(X)= (b) Find the variance Var X of X . Var(x)=Let X be a random variable with the following probability distribution. Value x of X P(X=x) 4 0.30 0.05 0.10 7 0.15 8 0.40 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (x) = D (b) Find the variance Var(X) of X. Var (X) = ] %3D
- Let X be a random variable with the following probability distribution. Value x of X 10 20 30 40 P (X=x) 0.30 0.40 0.25 0.05 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) = |Let X be a random variable with the following probability distribution. Value x of X P(X=x) 40 0.10 50 0.45 60 0.15 70 0.20 80 0.05 90 0.05 Find the expectation E(X) and variance Var(X) of X.Let X be a random variable with the following probability distribution. Value x of X P(X=x) 0 0.25 10 0.20 20 0.10 30 0.35 40 0.10 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X . E(X)= (b) Find the variance Var (X)of X. Var (X)=
- Let X be a random variable with the following probability distribution.Let X be a random variable with the following probability distribution. Value X of X P(X=x) 30 Continue 40 50 60 70 80 0.15 0.25 0.20 0.10 0.15 0.15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (X) = (b) Find the variance Var(X) of X. Var(x) = 0 O SLet X be a random variable with the following probability distribution. Value x of X P(X=x) 10 20 30 40 50 0.10 0.30 0.20 0.25 0.15 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) =
- Let X be a random variable with the following probability distribution. Value x of X P(X=x) 2 0.05 3 0.05 4 0.05 5 0.85 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) = ☐ Check B X GLet X be a random varlable with the following probability distribution. Value x of X P(X=x) 2. 0.15 3. 0.10 0.35 5 0.15 6 0.10 0.15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(X) D (b) Find the variance Var(X) of X. Continue 2022 McGraw Hill LL acer 6Let X be a random variable with the following probability distribution. Value x of X P(X=x) 3 4 5 5.0 6 0.10 0.05 0.40 0.45 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