If the mean of the following probability distribution is 3.44, what is the variance?

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A: a) Mean =E(X) =0(0.2)+1(0.3)+2(0.01)+3(0.09)+4(0.4) =2.19

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Q: If the mean of the following probability distribution is 3.44, what is the variance? 3 4 P(X=x) 0.23…

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