# Question

The arrival time of an elevator in a 12- story dormitory is equally likely at any time range during the next 4 minutes.

a. Calculate the expected arrival time.

b. What is the probability that an elevator arrives in less than 1, 1/ 2 minutes?

c. What is the probability that the wait for an elevator is more than 1, 1/ 2 minutes?

a. Calculate the expected arrival time.

b. What is the probability that an elevator arrives in less than 1, 1/ 2 minutes?

c. What is the probability that the wait for an elevator is more than 1, 1/ 2 minutes?

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