A random variable `X` has Poisson distribution with mean `2` .Then `P(X>= 2)`equals

A random variable X has poisson distribution with mean 2. Then P(x>1.5) is equal to (A) (2)/(e^(2))(B)0(C)1-(3)/(e^(2))(D)(3)/(e^(2))

A randam variable X has Poisson's distribution with mean 2. Then , P(X)gt 1.5) is equal to

A random variable X has poisson's distribution with mean 3. Then find the value of P(Xgt2.5) .

If the random variable 1 follows a Poisson distribution with mean 3 then P(X=0) is

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

Let a random variable X have a binomial distribution with mean 8 and variance 4. If P(X<=2)=(k)/(2^(16)), then k is equal to :

Let a random variable X have a binomial distribution with mean 8 and variance r. If P(X le 2 ) = (k)/(2^(16)) , then k is equal to

A random variable X follows binomial distribution with mean alpha and variance beta . Then,

The mean and variance of a random variable X having a binomia distribution are 4 and 2 respectively.Then, P(X=6), is equal to