Mathematics: I really need help with this one! please help me! Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that at least 2 of them use their smartphones in meetings or classes.

I really need help with this one! please help

Ответ:

vsuescun10

27.09.2021

$p = 56\% = 0.56 \\ n = 5 \\ q = 1 - p = 0.44 \\ P(X = x) = {n \choose x} {p}^{x} {q}^{(n - x) } \\ P(X < 2) = P(X = 0) + P(X = 1) \\ {5 \choose 0} {0.56}^{0} {0.44}^{(5 - 0) } + {5 \choose 1} {0.56}^{1} {0.44}^{(5 - 1) }$

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Ответ:

jordystafford4988

03.11.2021

Mathematics

725

Step-by-step explanation:

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I really need help with this one! please help me! Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that at least 2 of them use their smartphones in meetings or classes.

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