LAST DIGIT = 7 . BE CAREFUL!. URGENT!!

a. b. In a dentist the rate for the number of the customers is ([Last Digit is 5] 9) (Last Digit is 1,3,7,9) 7) (Last Digit is 0,2,4,6,8] 8) customers per hours. On an average a doctor can serve customers at rate of one every 5 minutes. Find average number of the customers in the clinic (system) and queue? Find average waiting time in the queue? c. What is the probability that the clinic be empty? d. What is the probability that exactly (Last Digit is Even] 4) (Last Digit is Odd] 6) customers present in the system? Whit which probability the number of the customers in the system can be ([Last Digit is Even] between 6 and 9) (Last Digit is Odd] between 8 and 11)? e. a. b. In a dentist the rate for the number of the customers is ([Last Digit is 5] 9) (Last Digit is 1,3,7,9) 7) (Last Digit is 0,2,4,6,8] 8) customers per hours. On an average a doctor can serve customers at rate of one every 5 minutes. Find average number of the customers in the clinic (system) and queue? Find average waiting time in the queue? c. What is the probability that the clinic be empty? d. What is the probability that exactly (Last Digit is Even] 4) (Last Digit is Odd] 6) customers present in the system? Whit which probability the number of the customers in the system can be ([Last Digit is Even] between 6 and 9) (Last Digit is Odd] between 8 and 11)? e