If 12 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes.
Probability of using smartphone in meetings or classes
Number of selecting adult smartphone
We have to find probability of selecting fewer than 3 of them use their smartphones in meetings or classes.
We can use binomial probability to find required probability.
Assume that a procedure yields a binomial distribution with a trial repeated
(Report answers accurate to 4 decimal places.)