A fund has generated an annual return of $9\mathrm{.}24\%.$ What is the fund's Sharpe ratio $($to four decimal places$)$ if the fund has a beta of $0\mathrm{.}77,$ a standard deviation of returns of $12\mathrm{.}41\%$ and the risk$-$free rate is $3\mathrm{.}05\%?$ Express the fund return, riskfree rate and standard deviation in decimal form when performing your calculations e$.$g$.$ a fund return of $8\mathrm{.}55\%$ should be entered in your calculator as $0\mathrm{.}0855$ rather than as $8\mathrm{.}55.$