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According to a survey, 23.9% of credit-card-holding families in a certain area hardly ever pay off the balance. Suppose a random sample of 30 credit-card-holding

According to a survey, 23.9% of credit-card-holding families in a certain area hardly ever pay off the balance. Suppose a random sample of 30 credit-card-holding families is taken. Find the probability that at least 4 families hardly ever pay off the balance. The probability that at least 4 families hardly ever pay off the balance is (Round to four decimal places as needed.)

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