If 12 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes.

Chardonnay Felix
2021-09-26
Answered

Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes (based on data from an LG Smartphone survey).

If 12 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes.

If 12 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes.

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hosentak

Answered 2021-09-27
Author has **100** answers

Step 1

Given:

Probability of using smartphone in meetings or classes

Number of selecting adult smartphone

We have to find probability of selecting fewer than 3 of them use their smartphones in meetings or classes.

Step 2

We can use binomial probability to find required probability.

Formula:

Step 3

Therefore,

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