The table below shows the respective probabilities that a number of power failures will strike a certain subdivision in any given year, with mean E(X) = 1.3 and variance o=1.01. Find the mean and the variance of the random variable Z=7X+2. probability power failures 0.3 0 0.2 1 0.4 2 0.1 3

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A: n1=80, x1=64 n2=60, x2=39 X: people got sick 1: Ate fish 2: Did not eat fish

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