1.

The probability distribution of a random variable X is given as under : P(X=x)={(kx^(2)",",x="1, 2, 3"),(2kx",",x="4,5,6"),(0"", "Otherwise"):} where k is a constant. Calculate (i) E(X), (ii) E(3X^(2)) and (iii) P(x ge 4).

Answer»


ANSWER :`(i) 4.32, (II) 61.92, (III) (15)/(22)`


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