Question

Assume that when adults with smartphones are randomly​ selected, 36​% use them in meetings or classes....

Assume that when adults with smartphones are randomly​ selected, 36​% use them in meetings or classes. If 66 adult smartphone users are randomly​ selected, find the probability that exactly 44 of them use their smartphones in meetings or classes.

The probability is ????. ​(Round to four decimal places as​ needed.)

Math   Statistics-And-Probability   
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Answer #1

Given the probability that adult smartphone users use their smartphones in meetings or classes is p=0.36

Let X be the number of adult smartphone users use their smartphones in meetings or classes.

Therefore,

The probability that exactly 44 of them use their smartphones in meetings or classes given by:

#### By using Excel function: "=BINOMDIST(44,66,0.36,0)"

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