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Find the mean of this probability distribution

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Reference no: EM132391529

Suppose that the probabilities are 0.5, 0.25, 0.15, and 0.10 that 0,1,2, or 3 students are absent from a certain class on any day.

a) Find the mean of this probability distribution

b) Find the variance of this probability distribution

Reference no: EM132391529

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