he expected return and standard deviation of a portfolio that is 30 percent invested in 3 Doors, Inc., and 70 percent invested in Down Co. are the following: 3 Doors, Inc. Down Co. Expected return, E(R) 18 % 14 % Standard deviation, σ 61 26 What is the standard deviation if the correlation is +1? 0? −1? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places. )
a)
b)
c)
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