Question

Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find theprobability that exactly 6 of them use their smartphones in meetings or classes.The probability is

Answer 1

the Assume that when adults with smartphones are randomly selected, 46% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find the

probability that exactly 6 of them use their smartphones in meetings or classes.

In this problem we have a Binomial Probability Distribution

n=8

k=6

p=46%=0.46

q=1-p=0.54

`P(x=k)=(n!)/(k!(n-k)!)\cdot p^k\cdot q^((n-k))`

substitute the given numbers

`P(x=6)=(8!)/(6!(8-6)!)\cdot0.46^6\cdot0.54^((2))`

P(x=6)=0.0774