diagram for this queueing system.
Q: Explain what causes waiting lines to form and why is it impossible to eliminate them completely
A: The following factors illustrate the emergence of waiting lines.
Q: gh one of the two machines at proceeding to station 2. tion 2 : 5 units/hr Station 3 Capacity: 12…
A:
Q: Question Complete the following table. Customer Arrival Time Service Time Finish Time Wait…
A: Customer Arrival Time Service Time 1 0 10 2 3 3 3 8 7 4 10 21 5 15 11 6 28 8
Q: Describe whether the arrival rates are constant and service rates are random at a doctor office and…
A: Determine whether the arrival rates at a doctor's office are continuous or unexpected, and identify…
Q: Define dispatch list
A: A list of orders of all products and components that are produced based on their priority. It…
Q: Analyze waiting line problems.
A: Management is the coordination of all resources, skills, and knowledge through the process of…
Q: What two things must be done to control queue and meet delivery commitments?
A: Queue management approaches are used to control queues in a system.
Q: Describe how Jollibee manage waiting lines.
A: Jollibee is a famous fast food outlet in the Philippines which is always in demand for its tasty…
Q: Understand what a waiting line problem is.
A: The waiting line system is exactly what it sounds like. Waiting line management problems or issues…
Q: Explain PERSONNEL SCHEDULING IN SERVICES?
A: Employee scheduling problem arises in service industries, that have flexible employee availability…
Q: Consider the following actual and forecast demand levels for Big Mac hamburgers at a local…
A: Given data is Alpha = 0.25
Q: 1) What is the sample mean, sample standard deviation, minimum, and maximum of the waiting time in…
A: Given Sample mean: It is the average of a sample of observations, it is calculated by summing up…
Q: Consider the transportation problem having the cost and requirement table below. DESTINATION 3 2 4…
A: Using the North-West Corner method D1 D2 D3 D4 Supply S1 9 7 6 4 50 S2 2 4 3 10 30…
Q: What is suitable model for factory in queuing theory?
A: Queuing theory a study of the mathematical concept of waiting for lines or Queues. Queuing theory is…
Q: What are several psychological alternatives to queue management, and why does a boss like to employ…
A: Exploration shows that how individuals feel while holding up issue more than the length of the stand…
Q: 2. When examining organizational effectiveness, the presenting (initial) problem is: a. always the…
A: Step 1 Correct answer will be (d) often a symptom of an underlying problem.
Q: Q2. In Aegis life insurance company, the deposit and withdrawal functions associated with cer- tain…
A: Stack's Desk: Arrival rate λ= 16 deposit slips/hour Service rate μ= 13×60 = 20 deposit slips/hour…
Q: B. Draw and explain the flow charts of the Arrival Event and Service Completion Event.
A: Queueing theory deals with waiting times of customers. This can be used in service situations where…
Q: List the various types of queueing systems?
A: Queue management systems to quantify queue demand at some random time and advise your staff…
Q: A computing facility has a large computer server dedicated to service on-line applications from…
A: 1. 0.33 2. Grade F
Q: why queuing theory is so important and conclusion of overall topic
A: Queuing theory examines every component of the waiting line, including the arrival process, service…
Q: What is balk and renege model in queueing system and how to analysis?
A: Queuing theory often called queuing theory is nothing but the mathematical study of the formation,…
Q: Eat well is a small drive through fast food restaurant, staffed by an efficient employee John, is…
A: The concept of queuing theory is used here with M/M/1 queuing model.
Q: The following table gives data on nomal time and cost and crash time and cost for a project.…
A: When you reduce the time of one or more jobs, you can cut the duration of a project. Crashing occurs…
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- During nearly four decades of business operations, Memphis-based FedEx has earned a reputation for reliable, on-time delivery of packages to homes and offices around the country. Founder Fred Smith originally focused on overnight deliveries, choosing Memphis as the company’s headquarters because the airport rarely closes due to bad weather. With FedEx’s planes departing and arriving on schedule nearly all the time, its express shipments usually remained on schedule, then and now. To reassure customers that delivery will take place when and where promised, the firm offers a money-back guarantee on time-sensitive express shipments, among other services. FedEx has steadily expanded its portfolio of services since the 1970s. Its original overnight express delivery is currently available to U.S. customers in various forms, including “first-overnight” delivery, next-morning delivery, next-afternoon delivery, and budget-pleasing two- or three-day delivery. The company’s services also include cost-effective ground delivery for parcels and extra-speedy same-day delivery for urgent deliveries within 1,800 cities. Over the years, FedEx has widened its delivery network to more than 220 countries. It has purchased more cargo jets and acquired specialized shipping firms, including Tiger International, Roberts Express, RPS, and TNT Express, to support global growth. For international business customers needing products, parts, or raw materials shipped across countries or continents, the company now offers time-saving services such as commercial freight forwarding and cross-border logistical support. To add the convenience of local drop-off and pickup points for U.S. consumers and small businesses, FedEx acquired the Kinko’s office services company in 2004 and later rebranded it as FedEx Office. This acquisition also added printing and copying to the menu of services offered. Then the company arranged for large U.S. retailers such as Walgreens, Albertsons, Kroger, and Safeway to accept packages for shipment and receive package delivery for customer pickup in thousands of store locations. This means people who want to send a package can head to a nearby retailer and ship where they shop, rather than making a separate trip to the FedEx location. It’s also a safe alternative for packages to be picked up by people who don’t want FedEx shipments left by the front door. Another service FedEx offers to small and mid-sized businesses, including retailers, is FedEx Fulfillment. The purpose is to expedite order fulfillment by having each business store its products in a FedEx warehouse. Then, when the business’s customers place orders, FedEx puts the products into boxes bearing the business’s own logo and ships directly to those customers. The business doesn’t need a separate warehouse or staff for fulfillment, and packages are on their way to customers more quickly because the products were in FedEx’s warehouse, ready to be packed and shipped. This service puts FedEx into direct competition with Amazon.com, which offers a similar service to merchants that sell through the online Amazon Marketplace. But it also gives businesses that don’t sell via Amazon a fast and professional fulfillment alternative. FedEx is careful to let customers know, through media and social-media announcements, when it anticipates that extreme weather or other conditions will cause delays or force it to halt pickups and deliveries. For the duration of Hurricane Irma, for example, FedEx said it would suspend deliveries in Florida. Some Florida customers who had ordered generators to be delivered via FedEx were unhappy, because they worried about being without power during and after the storm. But one FedEx employee loaded several generator orders into his car and took them to customers himself. When a customer posted a grateful compliment to FedEx on Facebook, the message generated thousands of likes, shares, and positive comments. The company also received positive comments for its donations of cash and transportation services to areas devastated by Hurricanes Irma, Harvey, and Maria. According to the American Customer Satisfaction Index (ACSI), FedEx often tops the list of U.S. shipping companies as ranked by customers surveyed. Every day, the company delivers 13 million packages—and during the busy year-end holiday season, it delivers many more. By meeting customers’ expectations for on-time deliveries, FedEx has increased annual revenues beyond $60 billion and positioned itself for continued growth in the future. How does FedEx’s money-back guarantee address customers’ concerns about heterogeneity?The check-out area of a grocery store has the average customer interarrival time = 2 minutes, the average processing time of each cashier = 6 minutes, and in total 4 cashiers. The average waiting time for each customer is 8 minutes. What is the average number of customers in the system (including waiting and using the service)? a 3 b 7 c 6 d 4Josh’s Hot Dogs is a one-person hot dog stand, and normally gets about 14 customers per hour. Assuming that Josh can serve one customer in about 3 minutes. What impact does this have on the queuing characteristics? Specifically, the following questions:a. Mean number of customer in the queue b. Mean number of customer in the system: c. Mean waiting time in the queue:d. Mean waiting time in the system:e. Utilization factor for the system:f. Probability of more than 1 customer in the system at any given time.g. Do you think he has an acceptable queuing system?
- 6. The Garrett-Tompkins Company provides three copy machines in its copying room for the use of its employees. However, due to recent complaints about considerable time being wasted waiting for a copier to become free, management is considering adding one or more additional copy machines. During the 2,000 working hours per year, employees arrive at the copying room according to a Poisson process at a mean rate of 40 per hour. The time each employee needs with a copy machine is believed to have an exponential distribution with a mean of 4 minutes. The lost productivity due to an employee spending time in the copying room is estimated to cost the company an average of $40 per hour. Each copy machine is leased for $4,000 per year. Find the following values for this system: λ, μ, Cs, Cw. Then use the Excel template to determine how many copy machines the company should have to minimize its expected total cost per hour. List your result in the following table. : S 3 4 5 P E(TC) = E(SC) + E…Given information: A typical TSA agent at Piedmont Triad International Airport takes approximately 1.15 minutes to screen each passenger that arrives at the security gate. During the day, a passenger arrives at the gate on average every 1.3 minutes. Both the service rate and arrival rate follow a Poisson distribution. Based on this information and the assumption that only one screening line is open at the security gate, answers the following questions. Round calculations to at least 3 decimal places. Note: Round each calculation to at least 3 decimal places. Arrival time =60/1.3=46.153 Server Rate =60/1.15=52.174 L=expected number of passengers in queue =6.780 waiting time in queue =.1469 time spent screening=.1660 please answer the 2 foloowing questions What is percent of the time does the typical TSA agent spend actively screening passengers? Throughout the day, passenger arrival rates vary with the greatest number of passengers arriving about 45 minutes before a flight is…A supermarket has four girls ringing sales at the counters. If the service time for each customer is exponential with mean 4 minutes, and if people arrive in a Poisson fashion at the rate of 10 per hour, calculate i. The average number of customers in the system. ii. The average time a customer spends in the system. iii. The average queue length iv. The average waiting time for customers. v. The expected percentage of idle time for each girl vi. The probability that at least a girl is waiting for the customer.
- 2. A repair and inspection facility consists of two stations: a repair station with two technicians, and an inspector station with 1 inspector. Each repair technician works at the rate of 3 items per hour; the inspector can inspect 8 items per hour. Approximately 10% of all items fail inspection and are sent back to the repair station. (This percentage holds even for items that have been repaired two or more times.) If items arrive at the rate of 5 per hour, what is the long-run expected delay that items experience at each of the two stations, assuming a Poisson arrival process and exponentially distributed service times? What is the maximum arrival rate that the system can handle without adding personnel?Customers arrive to a local bakery with an average time between arrivals of5 minutes. However, there is quite a lot of variability in the customers’ arrivals, asone would expect in an unscheduled system. The single bakery server requires anamount of time having the exponential distribution with mean 4.5 minutes to servecustomers (in the order in which they arrive). No customers leave without service.d. Calculate the probability a customer will spend more than an hour at the bakery(time in queue plus service time).The store opens at 8 am. Customers will arrive at Poisson rate λ = 10 per hour. (i) At what time do you expect the first customer to arrive? (ii) Given that the second customer arrived after 8.10 am, what is the expected arrival time of the first customer? (iii) After serving the third customer, the sales clerk takes a 10-minute break at 8.20 am. Upon his/return, he finds that the fourth customer has arrived. What is the probability that the customer has been waiting for more than 3 minutes?
- Lenny, a graduate research assistant "moonlights" at the short order counter in the student union snack bar in the evenings. He is the only one on duty at the counter during the hours he works. Arrivals to the counter seem to follow the Poisson Distribution with a mean of 8 per hour. Each customer is served one at a time and the service time follows an exponential distribution with a mean of 5 minutes. How long will a student wait in line, on average?If the restaurant runs a sale and the customer arrival rate increases by 20 percent how would this change the total time expected to serve a customer? How would this change the average number of cars in the drive-thru line?A supermarket has more than one server servicing at counters. The customer arrives in a Poisson fashion at the rate of 10 per hour. The service time for each customer is expected with a mean of 4 minutes. Find the probability of a customer has to wait for the service, average queue length, the average time spent by a customer in the queue.
