The probability density function of a random variable, $x$ is $f(x)=\frac{x}{4}\left(4-x^{2}\right) \text { for } 0 \leq x \leq 2$ $=0$ otherwise The mean, $\mu_{\mathrm{s}}$ of the random variable is
The probability density function of a random variable, $x$ is $f(x)=\frac{x}{4}\left(4-x^{2}\right) \text { for } 0 \leq x \leq 2$ $=0$ otherwise The mean, $\mu_{\mathrm{s}}$ of the random variable is