Question
Please help. -0.036 is incorrect.
Consider the expected outcomes of Projects A and B: State of Nature Probability of Occurrence Project A Return Project B Retu
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Answer #1

Given

Probability Project A return Project B Return
0.25 0.06 -0.2
0.5 0.03 0.08
0.25 -0.06 0.4
Mean 0.01 0.09

Covariance = sum of (X1 - mean of X)*(Y1 - mean of Y)*probability of its occurrence

So covariance = (0.01-0.06)*(0.09+0.02)*0.25 + (0.01-0.03)*(0.09-0.08)*0.5 + (0.01+0.06)*(0.09-0.4)*0.25 = -0.009

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