I am struggling with Standard Deviation and Coefficient Variation - b&c.  Please help! Compute the (a) expected return, (b) standard deviation, and (c) coefficient of variation for investments with the following probability distributions: (LO 8-2) Probability rA rB 0.3 30.0% 5.0% 0.2 10.0 15.0 0.5 - 2.0 25.0

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