Assume that when adults with smartphones are randomly selected, 53% use them in meetings or classes. If 8 adult smartphone users are randomly selected, find the probability that at least 3 of them use their smartphones in meetings or dasses
The probability is
(Round to four decimal placer as needed)

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected