Of the last 20 trains to arrive at Danville Station, 15 were on time. What is the experimental probability that the next train to arrive will be on time?
The experimental probability is:
Number of on-time trains / Total number of trains
Since 15 out of the last 20 trains were on time, this means:
Number of on-time trains = 15
Total number of trains = 20
Therefore, the experimental probability that the next train to arrive will be on time is:
15/20 = 0.75 or 75%