Suppose that the index model for stocks A and B is estimated from excess returns with the following results:

RA $=1\mathrm{.}00\%+0\mathrm{.}45$RM $+$ eA

RB $=-1\mathrm{.}00\%+1\mathrm{.}00$RM $+$ eB

$\backslash$sigma M $=16\%$; R$-$squareA $=0\mathrm{.}28$; R$-$squareB $=0\mathrm{.}21$

Assume you create a portfolio Q$,$ with investment proportions of $0\mathrm{.}50$ in a risky portfolio P$,0\mathrm{.}30$ in the market index, and $0\mathrm{.}20$ in T$-$bill. Portfolio P is composed of $60\%$ Stock A and $40\%$ Stock B$.$

Required:

What is the standard deviation of portfolio Q$?$

Note: Calculate using numbers in decimal form, not percentages. For example use $"20"$ for calculation if standard deviation is provided as $20\%.$ Do not round intermediate calculations. Round your answer to $2$ decimal places.

What is the beta of portfolio Q$?$

Note: Calculate using numbers in decimal form, not percentages. For example use $"20"$ for calculation if standard deviation is provided as $20\%.$ Do not round intermediate calculations. Round your answer to $2$ decimal places.

What is the "firm$-$specific" risk of portfolio Q$?$

Note: Calculate using numbers in decimal form, not percentages. For example use $"20"$ for calculation if standard deviation is provided as $20\%.$ Do not round intermediate calculations. Round your answer to $4$ decimal places.

What is the covariance between the portfolio and the market index?

Note: Calculate using numbers in decimal form, not percentages. For example use $"20"$ for calculation if standard deviation is provided as $20\%.$ Do not round intermediate calculations. Round your answer to $2$ decimal places.