SOLUTION: Assume that when adults with smartphones are randomly selected, 62% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probabilit
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Question 1152715: Assume that when adults with smartphones are randomly selected, 62% use them in meetings or classes. If 5 adult smartphone users are randomly selected, find the probability that exactly 3 of them use their smartphones in meetings or classes.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
p = probability of success
p = probability individual uses smartphone in meetings or classes
p = 0.62
n = sample size
n = 5
This is a binomial problem as there are two outcomes (either the person uses the phone in meetings/classes or they don't) and each event is independent.
Binomial PDF formula
Plug in n = 5 and p = 0.62
Now plug in x = 3 to find the binomial probability that exactly 3 adults use their phones in meetings or classes.
The answer is 0.344145632
Round this however your teacher instructs.
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