Question

Assume that when adults with smartphones are randomly​ selected, 54​% use them in meetings or classes. If 66 adult smartphone users are randomly​ selected, find the probability that exactly 44 of them use their smartphones in meetings or classes.
I figured out that n=6, x=4, and p=0.54. 

I think I am supposed to use the binomial formula but I don't know how to. 

Answer 1

N - number of sample = 66

X = 44

P=0.54

q= 1-0.54

66 C 44 * 0.54^44 * (1-0.54)^(66-44)