Consider historical data showing that the average roughly $8\%$ more than the Treasury bill return and that the S&P $500$ standard deviation $h$ values are representative of investors' expectations for future performance and that the

Calculate the expected return and variance of portfolios invested in T$-$bills and the S&P $5$ Note: Round your "Expected Return" answers to $2$ decimal places and "Variance" ansv

Answer is not complete.

$\backslash$table$[[W_{\text{B}\text{i}\text{l}\text{l}\text{s}},W_{\text{I}\text{n}\text{d}\text{e}\text{x}},$Expected Return,,Variance,$],[0\mathrm{.}0,1\mathrm{.}0,10\mathrm{.}00,\%,0\mathrm{.}0841,$Example$],[0\mathrm{.}2,0\mathrm{.}8,8\mathrm{.}40,\%,,],[0\mathrm{.}4,0\mathrm{.}6,6\mathrm{.}80,\%,,],[0\mathrm{.}6,0\mathrm{.}4,5\mathrm{.}20,\%,,],[0\mathrm{.}8,0\mathrm{.}2,3\mathrm{.}60,\%,,],[1\mathrm{.}0,0\mathrm{.}0,2\mathrm{.}00,\%,0,]]$