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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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