[" 20.A random variable "X" can take all non-negative integral values,and the probability that "X],[" takes the value "r" is proportional to "a(0

If a random variable X can take all non- negative integral values and the probability that X takes the value r is proportional to alpha^(r)(0 lt alpha lt 1) then P(X = 0) is ………..

A random variable X can take all non-negative integral values and the probabililty that X takes the value r is proportional to alpha^(r)(0

A random variable X cantake all nonnegative integral valuesand the probabililty that X takes the value r isproportionalto alpha^r (0 < alpha <1 )dot Find P(X=0)dot

A ramdom variable X can assume any positive integral value of n with a probability proportional to n with a probability proportional to (1)/(3^(n)) . Find the expectation of X?

A discrete random variable X can take all possible integer values from 1 to K each with a probability (1)/(K) Its variance is

Random variable X takes integer values from 1 to n with equal probabilities then E(X) = ………..

Mean and variance of random variable X are 2 and 1 respectively. Then ……….. is the probability that X takes more than one value.

A random variable X has the following probability distribution : find the value of k