A random variable X has poisson's distri...

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

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Knowledge Check

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

A

`1-(3)/(e^2)`

B

`(3)/(e^2)`

C

`(2)/(e^2)`

D

0

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 :

A

`17`

B

`121`

C

`1`

D

`137`

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