The distribution function of a discrete random variable X is given by
Fx(k) = {0,k<10.1,1≤k<20.3,2≤k<30.7,3≤k<40.84≤k<51k≥5}\begin{Bmatrix} 0, & k < 1 \\ 0.1, & 1 \leq k <2 \\ 0.3, & 2 \leq k <3\\ 0.7, & 3 \leq k <4 \\ 0.8 & 4 \leq k < 5\\ 1 & k \geq 5 \end{Bmatrix}⎩⎨⎧0,0.1,0.3,0.7,0.81k<11≤k<22≤k<33≤k<44≤k<5k≥5⎭⎬⎫
1) What are the possible values of X?
2) Find the probability mass function of X.
1) The possible values of XXX are 1,2,3,4,51,2,3,4,51,2,3,4,5
2)
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