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The probability distribution of a random variable `X` is given as under: `P(X=x)={k x^2forx=1,2,3 2k xforx=4,5,6 0ot h e r w i s e` , where `k` is a constant. Find (i) `P(Xgeq4` ) (ii) `E(X)` (iii) `E(3X^2)`

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RD SHARMA ENGLISH-MEAN AND VARIANCE OF A RANDOM VARIABLE -All Questions
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