Question
In: Math
Assume that when adults with smartphones are randomly selected, 49% use them in meetings or classes....
Assume that when adults with smartphones are randomly selected, 49% use them in meetings or classes. If 15 adult smartphone users are randomly selected, find the probability that exactly 11 of them use their smartphones in meetings or classes.
Solutions
Expert Solution
According to the given question , the adults with smartphones are randomly selected, 49% use them in meetings or classes. Therefore the probability of the adults smartphones in meetings or classes is
.
It is follow binomial distribution , where 
is defined as the adults smartphones in meetings or
classes and the probability mass function of binomial distribution
(discreate distribution) is defined as:
where 
If 
adult smartphone users are randomly selected, then the
probability that exactly 
of them use their smartphones in meetings or classes is determined
as:
Therefore if 15 adult smartphone users are randomly selected, then the probability that exactly 11 of them use their smartphones in meetings or classes is
milcah answered 2 years agoRelated Solutions
Assume that when adults with smartphones are randomly selected, 49% use them in meetings or classes....
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