Consider the following table:

$\backslash$table$[[$Severe recenario,Probability,Stock Fund Rate of Return,Bond Fund Rate of Return$],[$Severe recession,$0\mathrm{.}05,-38\%,$Rate of Return$],[$Normal growth,$0\mathrm{.}15,-10\mathrm{.}0\%,5\%],[$Boom$,0\mathrm{.}30,15\%,6\%],[$Boom$,0\mathrm{.}50,25\%,-4\%]]$

Required:

a$.$ Calculate the values of mean return and variance for the stock fund.

Note: Do not round intermediate calculations. Round "Mean return" value to $1$ decimal place and "Variance" to $4$ decimal places.

$\backslash$table$[[$Mean return,$\%$