Can you show me how to solve this question?

Suppose you are at the airport waiting to receive your friend. The announcement says that the flight is expected to land in another 20 minutes. Mentally you are curious with the following questions, depending on various scenarios.

1. What is the probability that the flight lands in between now and the next 10 minutes? (A situation that you are excited and want to see your friend as early as possible)
2. What is the probability that the flight lands in between the 15th and 20th minute?
3. Find the mean and standard deviation of the distribution