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Find the expected value E(X), the variance Var(X) and the standard deviation σ(X) for the density...

Find the expected value

E(X),

the variance

Var(X)

and the standard deviation

σ(X)

for the density function. (Round your answers to four decimal places.)

f(x) = ex

on

[0, ln 2]

E(X) =   
Var(X) =
σ(X) =
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