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A random variable X as the following pro...

A random variable `X` as the following probability distribution: `x_i :-2-10123` `p_i :0. 1k0. 22k0. 3k` Find (i) Find the value of `kdot` (ii) Calculate the mean of`Xdot` Calculate the variance of `Xdot`

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`sum P_i=1`
`0.1+k+0.2+2k+0.3+k=1`
`0.6+4k=1`
`4k=0.4`
...
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