A college provides bus service to students while they are on campus. A bus arrives at the North Main Street and College Drive stop every 30 minutes between 6 a.m. and 11 p.m. during weekdays. Students arrive at the bus stop at random times. The time that a student waits is uniformly distributed from 0 to 30 minutes. How long will a student "typically" have to wait for a bus? In other words what is the mean waiting time?

Multiple Choice

• 0
• 30
• 15
• 0.15