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A study of frequent fliers found that 55% had an income over

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A study of frequent fliers found that 55% had an income over $69,570 a year
20 frequent fliers were selected at random, and their incomes recorded. What is the probability that at least 5 had an income over $69,570?
Submitted: 5 years ago.
Category: Homework
Expert:  R.R. Jha replied 5 years ago.
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