Answer:
The experimental probability of an event is the ratio of the number of times the event occurs to the total number of trials or observations.
In this case, the event is choosing a monitor with no defects, and the number of times the event occurs is 45. The total number of monitors is 50.
So, the experimental probability of choosing a monitor with no defects is:
45/50 = 0.9
Therefore, the experimental probability that a monitor chosen at random has no defects is 0.9 or 90%.