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Assume that when adults with smartphones are randomly selected, 48% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find

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Assume that when adults with smartphones are randomly selected, 48% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that at least 4 of them use their smartphones in meetings or classes. The probability is (Round to four decimal places as needed.)

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