In: Operations Management
A small town with one hospital has 4 ambulances to supply
ambulance service. Requests for ambulances during nonholiday
weekends average 0.68 per hour and tend to be Poisson-distributed.
Travel and assistance time averages 2.40 hours per call and follows
an exponential distribution Use Table 1.
a. Find system utilization. (Round your
answer to the nearest whole percent. Omit the "%" sign in your
response.)
System utilization
%
b. Find the average number of customers waiting.
(Round your answer to 3 decimal
places.)
Average number of customers
c. Find the average time customers wait for an
ambulance. (Round your answer to 3 decimal
places.)
Average time
hour
d. Find the probability that all ambulances will
be busy when a call comes in. (Round intermediate
calculations to 3 decimal places and final answer to 2 decimal
places.)
Probability