For the question 9 & 10 -Referring to the following table: X P(x) 5 0.1 0.3 0.2 0.4 10 15 20 9) What is the mean of the above probability distribution? a) 12.5 b) 13.5 c) 14.5 d) 15.5 10) What is the variance of the above probability distribution? a) 22.75 b) 27.25 c) 32.05 d) 33.55

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