Question: A random variable X can take on three possible values: -5, 0, or 10. Each of these values is associated with the following probabilities:

A random variable X can take on three possible values: -5, 0, or 10. Each of these values is associated with the following probabilities: P(X=-5) P(X = 0) = 0.4 and P(X 10)=0.2. = What is the variance of X?

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