Assume that when adults with smartphones are randomly selected,
4848%
use them in meetings or classes. If
1515
adult smartphone users are randomly selected, find the probability that exactly
1111
of them use their smartphones in meetings or classes.
The probability is
nothing .
Assume that when adults with smartphones are randomly selected,
4848%
use them in meetings or classes. If
1515
adult smartphone users are randomly selected, find the probability that exactly
1111
of them use their smartphones in meetings or classes.
The probability is
nothing .
Solution
Given that ,
Using binomial probability formula ,
P(X = x) = (n C x) * px * (1 - p)n - x
P(X = 11) = (15 C 11) * 0.4811 * (0.52)4
= 0.0311
The probability is 0.0311
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