Question: A table gives the probability distribution for the possible returns from two diferent investments. Investment A Return ($ millions) -8, Probability 1/4; Return 12, Probability

A table gives the probability distribution for the possible returns from two diferent investments. Investment A Return ($ millions) -8, Probability 1/4; Return 12, Probability 2/4; Return 20, Probability 1/4. Investment B Return ($ millions) 0 Probability 0.3, Return 10, Probability 0.4, Return 40, Probability 0.3. Compute the mean and the variance for each investment.

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