Question: A random variable X has Poisson distribution with mean 2. Then P ( x > 1.5 ) equals ( a ) 2/e 2 ( b

A random variable X has Poisson distribution with mean 2. Then P ( x > 1.5 ) equals

( a ) 2/e2 ( b ) 0

( c ) 1 - 3/e2

( d )3/e2

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