Question: I keep getting this wrong. I don't know how to do this. could you explain the equations I need to use and solve it. Random

I keep getting this wrong. I don't know how to do this. could you explain the equations I need to use and solve it.

Random Variables and Distributions Try again... Expectation and variance of a random variable 0/5 Shanellys V V Espanol Try Again Your answer is incorrect. . (a): Your answer is incorrect. . (b): Your answer is incorrect. Let X be a random variable with the following probability distribution. D Value x of X P(X=x) -20 0.15 -10 0.30 M 0 0.20 10 0.25 20 0.10 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X ) of X. X E(X) = 0.20 (b) Find the variance Var(X ) of X. Var(X ) = 155.64 Explanation Recheck 2025 McGraw Hill. Terms of Use | Privacy Center | Accessibility

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