Can you please tell me the formulas for answers a - e? Thank you.

= 1 Call / 50 Hours

= 0.02 calls per hour

Average service time = Travel Time + Repair Time

= 1 + 1.5 Hours

= 2 Hours

= 1 / 2.5 Hours

= 0.4 Customers Per Hour

(a) probability that no customers are in the system

The probability that no customers are in the system is 0.5380

(b) average number of customers in the waiting line

Average number of customers waiting in line is 0.2972

(c) average number of customers in the system

Average Number of customers in the system is 1 - 0.2972 = 0.7593

(d) average time a customer waits until the service technician arrives

Average time a customer waits until the service technician arrives is 1.6082 hours

(e) average time a customer waits until the machine is back in operation

Average time a customer waits until the machine is back in operation is 4.1082 hours