The arrival time of an elevator in a 12-story dormitory is equally likely at any time range ...

  

The arrival time of an elevator in a 12-story dormitory is equally likely at any time range during the next 3.6 minutes.

a. Calculate the expected arrival time. (Round your answer to 2 decimal places.) 

b. What is the probability that an elevator arrives in less than 2 minutes? (Do not round intermediate calculations. Round your answer to 4 decimal places.) 

c. What is the probability that the wait for an elevator is more than 2 minutes? (Do not round intermediate calculations. Round your answer to 4 decimal places.)