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Random Variables
medium
0:00.0
If
X
∼
Poisson
(
λ
=
1
)
X \sim \text{Poisson}(\lambda=1)
X
∼
Poisson
(
λ
=
1
)
, what is
E
[
X
2
]
E[X^2]
E
[
X
2
]
?
A
1
B
2
C
3
D
4
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