Final Exam
PRACTICE EXAM I
Time: 3 hours
Name:
Student id#:
Note: Throughout the exam, assume that there are no frictions, i.e., perfect capital
markets, information is immediately incorporated into stock prices, there is no spread
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between borrowing and lending rates, etc. If nothing else is stated, assume that everything
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is in real terms. Also, if nothing else is stated, do not consider taxes. If you think that you
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need to make additional assumptions, please specify these.
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Circle your final numerical answers!
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, 1. Portfolio choice: The following table shows the possible returns for two
stocks, i and j, in different states of the world. Here, pij denotes the
probability for stock i returning ri and stock j returning rj.
Returns rj 0% 20% 30%
ri pij
10% 30% 0% 0%
30% 0% 20% 20%
50% 0% 20% 10%
Hint: Notice that there are only 5 states of the world for which the probability to
occur is greater than 0.
a) (5 points) Calculate expected return of stock i and j respectively.
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b) (5 points) Calculate the standard deviation of stock i ’s and j’s returns
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respectively.
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c) (5 points) The correlation coefficient between stock i’s and j’s return is 0.76.
Calculate the standard deviation of the return of a portfolio of 40% in stock i and
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60% in stock j.
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This study source was downloaded by 100000805705997 from CourseHero.com on 11-12-2021 21:10:36 GMT -06:00
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