The Probability That a Poisson Random Variable X Is Equal $( 7 ! 2 ! ) / 9$

question 43

Multiple Choice

The probability that a Poisson random variable X is equal to 2, where = 7, is

• A) \(( 7 ! 2 ! ) / 9\) !
• B) \(9 ! / ( 7 ! 2 ! )\)
• C) \(\mathrm { e } ^ { - 7 } 7 ^ { 2 } / 2\) !
• D) \(\mathrm { e } ^ { - 2 } 2 ^ { 7 } / 7\) !

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