Question

For a Poisson variate X, P(X=1)=P(X=2). What is the mean of X?
(a) 1 (b) 3/2 (c) 2 (d) 5/2

Answer 1

Here we have x=1 and x=2. So, mean of x would be the sum of all values of x divided by number of x values. Here it would be Mean value of x=(1+2)/2

So 3/2 would be the right answer.

Answer 2

Answer:

here's the right ans hope it's useful as follows:::