SOLUTION: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. If 8 adult smartphones users are randomly selected, find the probability that e
Algebra ->
Probability-and-statistics
-> SOLUTION: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. If 8 adult smartphones users are randomly selected, find the probability that e
Log On
Question 1126820: Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. If 8 adult smartphones users are randomly selected, find the probability that exactly 2 of them use their smartphones in meetings or classes Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! It is 8C2*0.54^2*0.46^6=0.0774
8C2 is the number of ways exactly two things can be chosen from 8
It is 8!/2!*6!, or 8*7/2=28
binomial is the number of ways (n) wanted *probability raised to n * (1-probability) raised to total-n)
