FRM定量分析习题测评(一):The recent performance of Prudent Fund,with U

The recent performance of Prudent Fund,with USD 50 million in assets,has been weak and the institutional sales group is recommending that it be merged with Aggressive Fund,a USD 200 million fund.
 
The returns on Prudent Fund are normally distributed with a mean of 3%and a standard deviation of 7%and the returns on Aggressive Fund are normally distributed with a mean of 7%and a standard deviation of 15%.
 
Senior management has asked you to estimate the likelihood that returns on the combined portfolio will exceed 26%.
 
Assuming the returns on the two funds are independent,
 
your estimate for the probability that the returns on the combined fund will exceed 26%is closest to:
 
A.1.0%
 
B.2.5%
 
C.5.0%
 
D.10.0%

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Answer:C
 
Explanation:Since these are independent normally distributed random variables,the combined expected mean return is:
Combined volatility is:
The appropriate Z–statistic is:
and therefore P(Z>1.64)=1-.095=.05=5%

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