The probability distribution of random variable X is given by:
We know that
So,
(i) E(X) =
=
=
(approx.)
(ii)
=
=
(approx.)
(iii)
=
=
(iii)
(iii)
The probability distribution of random variable X is given by:
We know that
So,
(i) E(X) =
=
=
(approx.)
(ii)
=
=
(approx.)
(iii)
=
=