Suppose that the index model for stocks A and
B is estimated from excess returns with the following
results:
RA = 5.0% + 1.30RM +
eA
RB = –2.0% + 1.6RM +
eB
σM = 20%;
R-squareA = 0.20;
R-squareB = 0.12
What is the standard deviation of each stock? (Do not round
intermediate calculations. Round your answers to 2 decimal
places.)
=
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