The probability distribution of a random variable X is given below:


(i) Determine the value of k.


(ii) Determine P (X ≤ 2) and P (X > 2)


(iii) Find P (X ≤ 2) + P (X > 2).

We have



(i) Since,




8k+ 4k+ 2k+ k= 8




(ii)









(iii)


25