Question: 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

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	0	1	2	3
P(X=x)	0.28	0.22	0.26	0.24

Find the probability that at least two people are in line.

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