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A) Find the meanB) Find the standard deviation C) If each customer takes 2 minutes to check out, what is the probability that it will

A) Find the meanB) Find the standard deviation C) If each customer takes 2 minutes to check out, what is the probability that it will take more than 6 minutes for all the customers currently in line to checkout?

following probability distribution. X 0 2 3 4 5 P (x) 0.10 0.20 0.30 0.20 0.10 0.10

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