If `X` is a poisson variable such that `2P(X=0)+P(X=2)=2P(X=1)` then `E(X)=`

If X is a Poisson variate such that P(X=3)=P(X=2) , then P(X=4)=

" If "x" is a Poisson variate such that "P(x=0)=0.1" ,"P(x=2)=0.2" then the parameter "lambda" is "

If X has a poisson distribution such that P(x=2)=(2)/(3)P(x=1) then P(x=3) is

If X has a Poisson distribution such that P(x=2)=2/3 P(x=1) then find the value of P(x=3)

For the p.m.f. P (X = x) of discrete random variable X which takes values 1, 2, 3, 4 such that 2P(X=1)=3P(X=2)=P(X=3)=4P(X=4) , then E (X)=

If a random variable X has a poisson distribution such that P(X=1)=P(X=2), its mean and variance are

If X is a poisson variate with P(x=0)=0.8 then the variance of x is

If X has a binomial distribution, B(n, p) with parameters n and p such that P(X = 2) = P(X = 3), then E(X), the mean of variable X, is

If X follows Poisson distribution such that P (X = 1) = 0.4 and P (X = 2) = 0.2, Then find the value of m