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Random Variables
easy
0:00.0
If
X
X
X
has mean
μ
=
2
\mu = 2
μ
=
2
and variance
σ
2
=
5
\sigma^2 = 5
σ
2
=
5
, what is
E
[
X
2
]
E[X^2]
E
[
X
2
]
?
A
7
B
9
C
11
D
25
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