SOLUTION: Assume that when adults with smartphones are randomly​ selected, 53​% use them in meetings or classes. If 9 adult smartphone users are randomly​ selected, find th

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Question 1099293: Assume that when adults with smartphones are randomly​ selected, 53​% use them in meetings or classes. If 9 adult smartphone users are randomly​ selected, find the probability that exactly 2 of them use their smartphones in meetings or classes.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It is 9C2*(0.53^2)(0.47)^7
nCr*p^r*(1-p)^(n-r)
=36*.28*.0051=0.0512