The investor decides to diversify by investing $3,000 in Gryphon
stock and $5,000 in Royal stock, which Grypon stock has an expected
return of 9.4% and a standard deviation of 5.24%, and which Royal
stock has an expected return of 10% and a standard deviation of
13.5%. The correlation coefficient for the two stocks' returns is
0.7. Calculate the expected return and standard deviation of the
portfolio.
And I calculated that the expected return of the portfolio is
9.78%, and...