ISRO Computer Science (CSE) 2009 - Question 66

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If the pdf of a Poisson distribution is given by f(x) = e^-2 2^x / x! then its mean is

  • A. 2^x
  • B. 2
  • C. -2
  • D. 1

Answer: B. 2

Explanation: For Poisson, mean = lambda. Here lambda = 2.

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