Question a
Expected return of the portfolio=weighted average of individual return of securities
Let weight ofNASADQ be x, then weight of Treasury=1-x
so, x*12+(1-x)*3=10
or,9x=7, x=7/9
Hence the portfolio consists of securities in the following weights
weight of NASDAQ=7/9, of treasury=1-7/9=2/9
Question b
Beta of the portfolio=weighted average of individual beta of securities
And beta of treasury=0
so, 7/9*1+2/9*0=7/9=0.7777=0.78.
Question c
Beta of the portfolio=weighted average of individual beta of securities
and beta of treasury=0
So let the weight of NASDAQ be y,
so, 1*y+0*(1-y)=0.5
or, y=0.5
Hence the portfolio consists of securities in the following weights
weight of NASDAQ=weight of treasury=0.5
Expected return=0.5*12+0.5*3=7.5%
Suppose that the Nasdaq, with beta of 1, has an expected return of 12 percent and...
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