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. The random variable X, representing the number of errors per 100 lines of software code, has the following probability distribution: )0.03 0.37 0.2 0.25 0.15 (a) Find EX (b) Find E(x2) 5. Use the distribution from Problem 4. (a) Find the variance of X. V(X). (b) Find the standard deviation of X, SD(x)


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20 6 )003 0 37.2 0.2S 5 ECX) 2. 2 2. 5i ad the var ance or X ue.4 2 om a iad the skandard deviation x om Ques(a)

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