Question 1. Customers walk into a bank at an average rate of 20 per hour. On average there are 5 people waiting in queue (line) to be served. How long does the average customer wait in queue (line)?

Question 2. The data and process map below shows the annual revenue and average Account Receivable (AR) in millions of dollars for a company. What is the average flow time through the account receivable process?

Question 3. A government agency is responsible for approving all the construction permits for the healthcare related facilities. The process has two parts: permits await assignments and the approval process as shown in the process map below. On average, the agency receives 2 permits requests per day, there are 30 permits await assignment and the approval time is 55 days. On average how long the permits await assignment?

Question 4. In the government construction permit process, on average how long is the flow time of a permit (total wait time and process time)?

Question 5. In the government construction permit process, on average how many permits are with the agency (work in process/average inventory in the agency)?

Question 6. An electronic company wishes to determine the best order size for its best selling data storage equipment. The company has estimated the annual demand of 1000 units. The holding (carrying cost) is 10% of selling price of $1000 and the ordering cost is $25 to place. What is the economic order quantity?

Question 7. In the electronic company inventory case, what is the average inventory?

Question 8. In the electronic company inventory case, how many orders per year will be placed?

Question 9. In the electronic company inventory case, what is the minimum total annual inventory cost?

Question 10. In the electronic company case, if annual sales is expected to increase by 50% next year, how would the EOQ changes?

Question 11. The chart below shows the scatter plot and the equation of the regression line. If the company plans to budget $72,000 for advertising, how much should they expect in sales ($000)?

Question 12. Tucson Machinery, Inc. manufactures numerically controlled machines, which sells for an average price of $0.5 million each. Unit sales for the past two years are shown in the table below. Also shown is the graph of the demand. The equation for the depersonalized data is .

What is appropriate Seasonal Factor (SF) for this firm's first quarter?

Question 13. In Tucson Machinery case, What is appropriate Seasonal Factor (SF) for this firm's second quarter?

Question 14. In Tucson Machinery case, What is appropriate Seasonal Factor (SF) for this firm's third quarter?

Question 15. In Tucson Machinery case, What is appropriate Seasonal Indexes (SI) for this firm's fourth quarter?

Question 16. In Tucson Machinery case, What is the sales forecast in dollars for first quarter year three?

Question 17. In Tucson Machinery case, What is the sales forecast in dollars for second quarter year three?

Question 18. In Tucson Machinery case, What is the sales forecast in dollars for third quarter year three?

Question 19. In Tucson Machinery case, What is the sales forecast in dollars for fourth quarter year three?

Question 20. The process map below shows the security process through an airport. Times are in minutes. The table shows the results of 50 SimQuick simulations for a two hour period. Review the process map and the simulation output. How many customers are expected to enter the process during the two hour period?

Question 21. In the airport security simulation, on average how long does it take for a customer to pass through the security if no additional security is needed?

Question 22. In the airport security simulation, on average how long does it take for a customer to pass through the security if additional security is needed?

Question 23. In the airport security simulation, on average how long does it take for a typical customer to pass through the security (this is a weighted average)?

Question 24. Management wants to study the drive-thru at a number of Burger Queen (BQ) restaurants during the peak hours of 11 A.M. to 2 P.M. The process works as follows. Cars arrive and line up to place an order. It's been observed that the time between car arrivals can be approximated by an exponential distribution with a mean of 2.3 minutes. The time to place an order is also roughly exponentially distributed and takes a mean of 2 minutes per car. Cars then move forward to a single window, at which they pay and pick up their order. The amount of time a car sits at the pay/pick-up window can be approximated by an exponential distribution with a mean of 2.2 minutes. The process map and SimQuick simulation table are shown below. What is the average arrival rate per hour to the process?

Question 25. In the Burger Queen restaurant simulation, what is the service level for this process?

Question 26. In the Burger Queen restaurant simulation, on average how long does it take for a car (customer) to drive through the process?

Question 27. A simple project listing of five activities and their respective time estimates are presented below:

Using CPM, which activities make up the critical path?

Question 28. A company must perform a maintenance project consisting of seven activities. The activities, their predecessors, and their respective time estimates are presented below:

Using CPM, which activities make up the critical path?

Question 29. In the project network presented below, numbers on each arrow refer to the expected time and standard deviation in weeks for that particular activity. For example, "8,2" indicates an activity with an expected time of 8 and a standard deviation of two weeks.
What is the expected project duration?

Question 30. For the project network shown above, what is the probability that the project will be completed in 29 weeks?