For a Poisson variate X, P(X=1)=P(X=2). What is the mean of X?

CA Foundation · Quantitative Aptitude · MTP · June 2024
For a Poisson variate X, P(X=1)=P(X=2). What is the mean of X?
(A) A. 1
(B) B. 3/2
(C) C. 2
(D) D. 5/2

Suggested Answer and Working Notes:

Correct Answer: Option (C)

C. 2

Topics: Part-C: Statistics

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