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 P(X=x) 0 0.18 1 0.27 2 0.26 3 0.15 4+ 0.14 Find the probability that at least two people are in line.
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This means the number of customers (X) is greater than or equal to 2. Show more…
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