please send me answer of both 8 and 9 with in 10 min i will give you like sure.send me typed answer only please

8 For what value of d will the function HI] = dz: :- =1,2,3,...,n, d = constant be the probability mam function of a discrete random variable X. Find the mean and variance of X . 9 A random variable Y has the probability density function Cyz if ogygL C=consten1 9(H)= if otherwise (1') Find the value of constant C (ii) Find the probabilities Pm 5 Y 5 0.5). P(}' > g; and P(