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Random Variables
medium
0:00.0
Let
X
∼
Exp
(
1
)
X \sim \text{Exp}(1)
X
∼
Exp
(
1
)
. What is the variance
V
a
r
(
X
)
Var(X)
V
a
r
(
X
)
?
A
0.5
B
1
C
2
D
e
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