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

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

If X is a poisson variable such that 2P(X=0)+P(X=2)=2P(X=1) 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 P(x) = x^2 - x + 1 , find the value of P(1)

If P(x) = x^3 - 1 , then find the value of P(1) + P( -1 )

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

If X has Poisson distribution with parameter m and P(X = 2) = P(X = 3) , then find P(X ge 2). Use e^(-3) = 0.0497

If p(x)=x^(3)-1 ,then find the value of p(-1)+p(1)