The following stock has four return scenarios as below, what is the EXPECTED RISK of this stock? (You must round up your

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The following stock has four return scenarios as below, what is
the EXPECTED RISK of this stock? (You must round up your answers to
two decimals and type your answer without the percentage sign. E.g.
if you answer is 15.856%, type 15.86)
Scenario
Return
Probability
Boom
20%
20%
Good
15%
25%
Neutral
10%
40%
Recession
-20%
15%