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The certainty equivalent is the certain income or payment in dollars that makes a decision - maker indifferent between taking a risk and taking the

The certainty equivalent is the certain income or payment in dollars that makes a decision-
maker indifferent between taking a risk and taking the certain income. Suppose that an
individual investor plan to invest a risky urban project that has a 50-50 chance of obtaining or
losing $5,000 with a starting investment of $50,000. Then answer and discuss the following
relevant questions (The quantity results should be kept to three decimal places).
a) Let I denote the investment income, and calculate the certain income (i.e., the certainty
equivalent income) that offers the same utility for this investor in the following three
functions: U(I)=I2,U(I)=ln(I),U(I)=-1I, where "In" denotes natural logarithm
(For U(I)=-1I, the value of U(I) should at least be kept to eight decimal places).(9
marks)
b) Comparing the results in part (a), what do you conclude about these utility functions in
terms of the investor's risk attitude? (6 marks)
c) Given the initial investment of $50,000, if this investment project has a 50% chance of
obtaining a $6,000 return or incurring a $2,000 loss in one year, respectively, calculate
the certainty equivalent yield (return rate) for all the utility functions given in part (a)
(For U(I)=-1I, the value of U(I) should at least be kept to eight decimal places).(12
marks)
d) Comparing the results in part (c), what do you conclude about this investor's certainty
equivalent yield with the change in her/his risk attitude? (6 marks)
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