Using it's concept, it is found that there is a 31.25% probability that at least three coins land facing tails up.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, out of 16 tosses, 5 have at least 3 tails, hence:
p = 5/16 = 0.3125 = 31.25%.
31.25% probability that at least three coins land facing tails up.
You can learn more about probabilities at https://brainly.com/question/14398287