Assume that when adults with smartphones are randomly selected,61% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that exactly 3 of them use their smartphone in meetings or classes. (Round to 4 decimal places as needed)
1) Assume that when adults with smartphones are randomly selected,61% use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that exactly 3 of them use their smartphone in meetings or classes. (Round to 4 decimal places as needed)
2) Assume that when adults with smartphones are randomly selected, 55% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that at least 3 of them use their smartphone la in meetings or classes. (Round to 4 decimal places as needed)
3) Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes. If 11 adult smartphone users are randomly selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes. (An integer or decimal rounded to 4 decimal places as needed)
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