a$.$ Calculate the expected return, standard deviation of return, and coefficient of variation of return for a

portfolio containing $75\%$ of investment A and $25\%$ of investment B when the correlation coefficient

between the two investments is equal to $-0\mathrm{.}7.$

b$.$ Calculate the expected return, standard deviation of return, and coefficient of variation of return for a

portfolio containing $50\%$ of investment A and $50\%$ of investment B when the correlation coefficient

between the two investments is equal to $-0\mathrm{.}7.$

c$.$ Calculate the expected return, standard deviation of return, and coefficient of variation of return for a

portfolio containing $25\%$ of investment A and $75\%$ of investment B when the correlation coefficient

between the two investments is equal to $-0\mathrm{.}7.$

d$.$ Compare the expected return and standard deviation of return for the two original investments and three

portfolio alternatives.