Question2. The random variable $X$ has a distribution with density $$g(x)=\left\{\begin{array}{ll} 0 & x<0 \\ \frac{x}{8} & x \in[0,2) \\ \frac{1}{3}-\frac{x}{24} & x \in[2,8) \\ 0 & x>8 \end{array} .\right.$$
Calculate $\mathbb{E} X, \operatorname{Var} X$, the skewness coefficient of $X$, and the kurtosis of $X$.