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Random Variables
easy
0:00.0
If
E
[
X
]
=
2
E[X] = 2
E
[
X
]
=
2
and
V
a
r
(
X
)
=
2
Var(X) = 2
V
a
r
(
X
)
=
2
, what is
E
[
X
2
]
E[X^2]
E
[
X
2
]
?
A
4
B
6
C
8
D
0
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