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The distribution of a random variable X is given below:

X-x -2 -1 0 1 2 3
P(X-x) $\large\frac{1}{10}$ K $\large\frac{1}{5}$ 2k $\large\frac{3}{10}$ k

The value of k is:

$(1)\;\large\frac{1}{10}\\(2)\;\large\frac{2}{10} \\(3)\;\large\frac{3}{10}\\(4)\;\large\frac{7}{10} $

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answered Nov 7, 2013 by pady_1

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