6 The random variable \(X\) has distribution function F given by
$$\mathrm { F } ( x ) = \begin{cases} 1 - \mathrm { e } ^ { - 0.6 x } & x \geqslant 0
0 & \text { otherwise } \end{cases}$$
Identify the distribution of \(X\) and state its mean.
Find
- \(\mathrm { P } ( X > 4 )\),
- the median of \(X\).