Assume that the probability distribution $F$ of loss $L$ is defined by

$P(L=l_i)=\{\begin{array}{ccc}0\mathrm{.}2& if& l_i=0\\ 0\mathrm{.}1& if{l}_i=\{1,2,3,4,5,6,7,& 8\}\end{array}$

Calculate $E{S}_{}(L)$ for $=\{0\mathrm{.}90$;$0\mathrm{.}95\}$