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Random Variables
hard
0:00.0
Let
X
X
X
have MGF
M
X
(
t
)
=
e
t
2
/
2
M_X(t) = e^{t^2/2}
M
X
(
t
)
=
e
t
2
/2
. What is
E
[
X
]
E[X]
E
[
X
]
?
A
0
B
1
C
0.5
D
e
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