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(b) If Y has probability density function NI- if y = 1, f (v) =3 y-1 if1 (b) If Y has probability density function fly)
(b) If Y has probability density function fly) = Find: (i) the mean of Y; and (ii) the variance of Y. 1 y O if y 1, if 1 < y < 2, elsewhere.
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