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Random Variables
medium
0:00.0
Let
X
∼
Exp
(
λ
=
2
)
X \sim \text{Exp}(\lambda = 2)
X
∼
Exp
(
λ
=
2
)
. What is the mean of
X
X
X
?
A
0.5
B
1
C
2
D
4
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