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The probability distribution of a random variable X is given by

X=x 0 1 2 3 4
P(X=x) 0.4 0.3 0.1 0.1 0.1

The variance of X is 

$(a)\;1.76 \\(b)\;2.45 \\(c)\;3.2 \\(d)\;4.8 $

1 Answer

(a) 1.76
answered Nov 7, 2013 by pady_1
 
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