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If 20 adults smartphone users are randomly selected , find the probability that exactly 13 of them use their smartphones in meeting or classes. Assume

If 20 adults smartphone users are randomly selected , find the probability that exactly 13 of them use their smartphones in meeting or classes.

Assume that when adults with smartphones are randomly selected, 39% use them in meetings or classes. If 20 adult smartphone users are The probability is (Round to four decimal places as needed )

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