Twenty-five percent of the customers entering a grocery store between 5 P.M. and 7 P.M. use an express checkout. Consider five r
andomly selected customers, and let x denote the number among the five who use the express checkout. (a) What is p(4), that is, P(x = 4)? (Round the answer to five decimal places.) p(4) = .15 Incorrect: Your answer is incorrect.
