Theoretical Distribution

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Question : 117 of 118

Marks: +1, -0

For a random variable

x;

the probability deviatory function is given by:

f(x)=\;{e^{-(x-4)^{2}}}/{√{π}}

for

-∞ < x < ∞

Find the mean and variance of its distribution

$µ=2 ; σ^{2}=\;{1}/{4}$
$µ=4 ; σ^{2}=\;{1}/{2}$
$µ=\;{1}/{4} ; σ^{2}=\;{1}/{2}$
None

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