2021-12-15
Answered

Assume that when adults with smartphones are randomly selected, 52% use them in meetings or classes. If 10 adult smartphone users are randomly selected, find the probability that fewer than 5 of them use their smartphones in meetings or classes.

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nick1337

Answered 2022-02-14
Author has **510** answers

Step 1

Given Information:

52% of adults use their smartphones in meetings or classes. i.e.,

If

Let X denote the number of smartphone users who use their smartphones in meetings or classes and X follows Binomial distribution with number of trials

Probability mass function of Binomial variable is given by the formula:

Step 2

Required probability is obtained as follows:

Thus, the probability that fewer than 4 of them use their smartphones in meetings or classes is 3.28773

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