Question

assume that when adults with smartphones are randomly selected 36% use them in meetings or classes. If 6 .adult smartphone users are randomly selected , find the probability that at least 4 of them use their smartphones on meetings or classes

Answer 1

Solution

Given that ,

Using binomial probability formula ,

P(X = x) = (_n C _x) * p^x * (1 - p)^{n - x}

P(X $\ge$ 4) = P(x = 4) + P(x = 5) + P(x = 6)

= 0.1286

Probability = 0.1286