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Nov 2010 p63 q2
2946
In a probability distribution the random variable \(X\) takes the value \(x\) with probability \(kx\), where \(x\) takes values 1, 2, 3, 4, 5 only.
- Draw up a probability distribution table for \(X\), in terms of \(k\), and find the value of \(k\).
- Find \(E(X)\).
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