Answer :
If the economy boomed and the stock market beat expectations by 5%. The JetFlight's actual (realized) excess return is 15.15%
Excess return
Using this formula
Excess return=Expected excess return+(Stock market beats expectation) (beta)
Let plug in the formula
Excess return = 8% + (5%)(1.43) + 0%
DExcess return=8%+7.15%+0
Excess return = 15.15%
Therefore the JetFlight's actual (realized) excess return is 15.15%
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