Quantitative Analysis/Statistics M/C Homework-Need it now-Time sensitive

1. Jack Spratt is the production manager for a manufacturing firm that produces wizzy-gadgets and other items. The annual demand for a particular wizzy-gadget is 1,600 units. The holding cost is $2 per unit per year. The cost of setting up the production line is $25. There are 200 working days per year. The production rate for this product is 80 per day. If his maximum inventory level is 180 units, how many units did he produce each time he started production of the wizzy-gadgets? (Points : 5)

Question 2. 2. The critical path of a network is the: (Points : 5)

Question 3. 3. A person is using the normal distribution to determine the safety stock for a product. The "z" value of 1.28 would be associated with what service level? (Points : 5)

Question 4. 4. At the start of football season, the ticket office gets very busy the day before the first game. Customers arrive at the rate of four every ten minutes. The customer would be better off if the stadium employed: (Points : 5)

Question 5. 5. Mark Achin sells 3,600 electric motors each year. The cost of these is $200 each, and demand is constant throughout the year. The holding cost is $20 per unit per year. If Mark is ordering in lots of 90 units, what is his total order cost per year? (Points : 5)

Question 6. 6. Which of the following is not a use of inventory? (Points : 5)

Question 7. 7. Customers enter the waiting line at a cafeteria on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is four per minute and the average service rate of a single server is seven per minute, what is the average number of customers in the system? (Points : 5)

Question 8. 8. LP theory states that the optimal solution to any problem will lie at: (Points : 5)

Question 9. 9. In a non instanteneous receipt model, daily demand is 55 units and daily production is 120 units, Co=$70 and Cc=$4 per unit per year. What is the maximum inventory level? (Assume that the facility is open 365 days per year.) (Points : 5)

Question 10. 10. Customers enter the waiting line to pay for food as they leave a cafeteria on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is four per minute and the average service rate of a single server is seven per minute, what proportion of the time is the server busy? (Points : 5)

Question 11. 11. For a local hardware store, the total service cost is $10 per hour per employee and the waiting cost is $8 per hour per customer. Customers arrive at a rate of 20 per hour. On average a customer waits a total of 6 minutes. If a single clerk is employed, what is the total cost of the system? (Points : 5)

Question 12. 12. Given an activity's optimistic, most likely, and pessimistic time estimates of 3, 7, and 11 days respectively, compute the expected time for this activity. (Points : 5)

Question 13. 13. The behavior of jumping from one queue to another trying to get through as quickly as possible is called: (Points : 5)

Question 14. 14. In the basic EOQ model, if D=55 per month, S=$10, and H=$7 per unit per month, what is the EOQ? (Points : 5)

Question 15. 15. The EOQ model without the instantaneous receipt assumption is commonly called the: (Points : 5)

Question 16. 16. Which of the following is not an assumption in common queuing mathematical models? (Points : 5)

Question 17. 17. A suburban specialty restaurant has developed a single drive-thru window. Customers order, pay, and pick up their food at the same window. Arrivals follow a Poisson distribution while service times follow an exponential distribution. If the average number of arrivals is 6 per hour and the service rate is 2 every 15 minutes, how much time will elapse from the time a customer enters the line until he/she leaves the restaurant? (Points : 5)

Question 18. 18. Given the following information for a project, determine the critical path.  

(Points : 5)

Question 19. 19. Given the following information for a project, determine the estimated completion time of the project.  

(Points : 5)

Question 20. 20. Customers enter the waiting line to pay for food as they leave a cafeteria on a first-come, first-served basis. The arrival rate follows a Poisson distribution, while service times follow an exponential distribution. If the average number of arrivals is four per minute and the average service rate of a single server is seven per minute, on average, how much time will elapse from the time a customer enters the line until he/she leaves the cafeteria? (Points : 5)

Question 21. 21. A linear program has been solved and sensitivity analysis has been performed. The ranges for the objective function coefficients have been found. For the profit on, the upper bound is 100, the lower bound is 75, and the current value is 80. If the profit on is increased to 120, then: (Points : 5)

Question 22. 22. Given an activity's optimistic, most likely, and pessimistic time estimates of 3, 5, and 15 days, respectively, compute the PERT standard deviation for this activity. (Points : 5)

Question 23. 23. Which of the following is not true about arrivals? (Points : 5)

Question 24. 24. The term queue discipline describes the: (Points : 5)

Question 25. 25. A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate. The arrival rate of customers follows a Poisson distribution, while the service time follows an exponential distribution. The average arrival rate is three per minute and the average service rate is two per minute for each of the two clerks. What proportion of time are both clerks idle?  (Points : 5)

Question 26. 26. A vendor selling newspapers on a street corner is an example of a: (Points : 5)

Question 27. 27. Time an activity would take assuming very unfavorable conditions is represented by the: (Points : 5)

Question 28. 28. Lines at banks where customers wait for a teller window are usually representative of a: (Points : 5)

Question 29. 29. The minimization of cost or maximization of profit is the: (Points : 5)

Question 30. 30. For a maximization problem, assume that a constraint is binding. If the original amount of a resource is 4 lbs., and the range of feasibility (sensitivity range) for this constraint is from 3 lbs. to 6 lbs., increasing the amount of this resource by 1 lb. will result in the: (Points : 5)