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QUESTION 8 A small grocery store is considering installing an express checkout line. Let X be the number of customers in the regular checkout line.

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QUESTION 8 A small grocery store is considering installing an express checkout line. Let X be the number of customers in the regular checkout line. Note that these numbers include the customers being served, if any. The probability distribution of X is given in the table below. X o 1 2 3 PM Find the probability that at least one customer is in the regular checkout line. 0 a. 0.80 O b.0.5 O c, 0.45 O d.0.75

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