The Alfredo Fragrance Company produces only one product, a perfume called Hint of Elegance. Hint of Elegance consists of two secret ingredients blended into an exclusive fragrance, which is marketed in Zurich. An economic expression referred to as the Cobb-Douglas function descri...
10 Aug 2020As a business analyst, you are consulted to assist management with this decision by analyzing the data on calls and processing times.Simulation Models Assessment Tables AA: Distribution of Incoming CallsTime Between Calls (Minutes)Probability10.920.2030.2340.1850.1660.0870.06 Si...
10 Aug 2020Chris Lane, the head professional at Royal Oak Country Club, must develop a schedule of matches for the couples’ golf league that begins its season at 4:00 P.M. tomorrow. Eighteen couples signed up for the league, and each couple must play every other couple over the course of th...
10 Aug 2020Erica is going to fly to London on August 5 and return home on August 20. It is now July 1. On July 1, she may buy a one-way ticket (for $350) or a round-trip ticket (for $660). She may also wait until August 1 to buy a ticket. On August 1, a one-way ticket will cost $370, and a ...
10 Aug 2020What would you advise Alabama Air to do for the current reservation system based on the original call distribution?
10 Aug 2020A pair of dice is tossed 100 times and it is observed that 7’s appear 23 times. Test the hypothesis that the dice are fair (i.e., not loaded) at the 0.05 significance level by using (a) a two-tailed test and (b) a one-tailed test. Discuss your reasons, if any, for preferring one ...
10 Aug 2020Simple exponential smoothing (with α = 0.2) is being used to forecast monthly beer sales at Gordon’s Liquor Store. After observing April’s demand, the predicted demand for May is 4,000 cans of beer.a At the beginning of May, what is the prediction for July’s beer sales?b Actual d...
10 Aug 2020Wheaties is producing cereals with five different sets of trading cards:· Rock stars· NBA stars· Baseball stars· Hockey stars· Football starsEach box contains one set of trading cards, and you do not know which set is in a box until you open it.a On the average, how many boxes ar...
10 Aug 2020You have made it to the final round of “Let’s Make a Deal.” You know that there is $1 million behind either door 1, door 2, or door 3. It is equally likely that the prize is behind any of the three doors. The two doors without a prize have nothing behind them. You randomly choose...
10 Aug 2020Mattel is developing a new Madonna doll. Managers have made the following assumptions.It is equally likely that the doll will sell for two, four, six, eight, or ten years.At the beginning of year 1, the potential market for the doll is 1 million. The potential market grows by an ...
10 Aug 2020Dord Motors is considering whether to introduce a new model: the Racer. The profitability of the Racer will depend on the following factors:· Fixed cost of developing Racer: Equally likely to be $3 billion or $5 billion.· Sales: Year 1 sales will be normally distr...
10 Aug 2020A ticket from Indianapolis to Orlando on Deleast Airlines sells for $150. The plane can hold 100 people. It costs $8,000 to fly an empty plane. The airline incurs variable costs of $30 (food and fuel) for each person on the plane. If the flight is overbooked, anyone who cannot ge...
10 Aug 2020A TSB (Tax Saver Benefit plan) allows you to put money into an account at the beginning of the calendar year to use for medical expenses. This amount is not subject to federal tax (hence the phrase TSB). As you pay medical expenses during the year, you are reimbursed by the admin...
10 Aug 2020The United Airlines security station for Terminal C in Indianapolis has 3 X-ray machines. During the busy early morning hours, an average of 400 passengers per hour arrive at Terminal C (with exponential interarrival times). Each X-ray machine can handle an average of 150 passeng...
10 Aug 2020At a manufacturing assembly line, 30 jobs arrive per hour. Each job must pass through two production stages: stage 1 and stage 2. Stage 1 takes an average of 1 minute to complete, and 1 worker is available to perform stage 1. After completing stage 1, the job immediately passes t...
10 Aug 2020Jobs arrive at a workshop, which has two work centers (A and B) in series, at an exponential rate of 5 per hour. Each job requires processing at both these work centers, first on A and then on B. Jobs waiting to be processed at each center can wait in line; the line in front of w...
10 Aug 2020Consider a bank with 4 tellers. Customers arrive at an exponential rate of 60 per hour. A customer goes directly into service if a teller is idle. Otherwise, the arrival joins a waiting line. There is only one waiting line for all the tellers. If an arrival finds the line too lon...
10 Aug 2020A large car dealership in Bloomington, Indiana, employs five salespeople. All salespeople work on commission; they are paid a percentage of the profits from the cars they sell. The dealership has three types of cars: luxury, midsize, and subcompact. Data from the past few years s...
10 Aug 2020A heart specialist schedules 16 patients each day, 1 every 30 minutes, starting at 9 A.M. Patients are expected to arrive for their appointments at the scheduled times. However, past experience shows that 10% of all patients arrive 15 minutes early, 25% arrive 5 minutes early, 50...
10 Aug 2020A salesperson in a large bicycle shop is paid a bonus if he sells more than 4 bicycles a day. The probability of selling more than 4 bicycles a day is only .40. If the number of bicycles sold is greater than 4, the distribution of sales is as shown in Table.No. of Bicycles SoldPr...
10 Aug 2020An airport hotel has 100 rooms. On any given night, it takes up to 105 reservations, because of the possibility of no-shows. Past records indicate that the number of daily reservations is uniformly distributed over the integer range [96, 105]. That is, each integer number in this...
10 Aug 2020Tankers arrive at an oil port with the distribution of interarrival times shown in Table.Interarrival Times (days)Probability1.202.253.354.155.05The port has two terminals, A and B. Terminal B is newer and therefore more efficient than terminal A. The time it takes to unload a ta...
10 Aug 2020An average of 40 jobs per day arrive at a factory. The time between arrivals of jobs is exponentially distributed. The factory can process an average of 42 jobs per day, and the time to process a job is exponentially distributed.a What is the probability that exactly 180 jobs arr...
10 Aug 2020Ships arrive at a port facility at an average rate of 2 ships every 3 days. On the average, it takes a single crew 1 day to unload a ship. Assume that interarrival and service times are exponential. The shipping company owns the port facility as well as the ships using that facil...
10 Aug 2020At the Smalltown post office, patrons wait in a single line for the first open window. An average of 100 patrons per hour enter the post office, and each window can serve an average of 45 patrons per hour. The post office estimates a cost of 10¢ for each minute a patron waits in ...
10 Aug 2020Registration at State University proceeds as follows: Upon entering the registration hall, the students first wait in line to register for classes. A single clerk handles registration for classes, and it takes the clerk an average of 2 minutes to handle a student’s registration. ...
10 Aug 2020The polls are open in Gotham City from 11 A.M. to 6 P.M. The city has 3 voting machines. It takes an average of 1.5 minutes (exponentially distributed) for a voter to complete voting. The arrival rate of voters throughout the day is as shown in Table.TimeHourly Arrival Rate11 A.M...
10 Aug 2020English professor Jacob Bright has one typist, who types for 8 hours per day. He submits three types of jobs to the typist: tests, research papers, and class handouts. The information in Table is available.Type of JobFrequency (number per day)E(Si ) (hours)E(S2i ) (hours)2Test212...
10 Aug 2020Southbest Airlines has an average of 230 customers per hour arriving at a ticket counter where 8 agents are working. Each agent can serve an average of 30 customers per hour. The squared coefficient of variation for the interarrival times is 1.5 and 2 for the service times.a On a...
10 Aug 2020Jobs arrive to a file server consisting of a CPU and two disks (disk 1 and disk 2). With probability 13/20, a job goes from CPU to disk 1, and with probability 6/20, a job goes from CPU to disk 2. With probability 1/20, a job is finished after its CPU operation and is immediately...
10 Aug 2020(Requires the use of a spreadsheet or LINGO) At the peak usage time, an average of 200 people per hour attempt to log on the Jade Vax. The average length of time somebody spends on the Vax is 20 minutes. If the Indiana University Computing Service wants to ensure that during peak...
10 Aug 2020Consider the following queuing systems:System 1 An average of 40 customers arrive each hour; interarrival times are exponential. Customers must complete two types of service before leaving the system. The first server takes an average of 30 seconds (exponentially distributed) to ...
10 Aug 2020An average of 100 customers per hour arrive at Gotham City Bank. It takes a teller an average of 2 minutes to serve a customer. Interarrival and service times are exponential. The bank currently has four tellers working. The bank manager wants to compare the following two systems...
10 Aug 2020A Social Security Administration branch is considering the following two options for processing applications for social security cards:Option 1 Three clerks process applications in parallel from a single queue. Each clerk fills out the form for the application in the presence of ...
10 Aug 2020A Northwest Airlines ticket counter forecasts that 200 people per hour will need to check in. It takes an average of two minutes to service a customer. Assume that interarrival times and service times are exponential and that all customers wait in a single line for the first avai...
10 Aug 2020A data storage system consists of 3 disk drives sharing a common queue. An average of 50 storage requests arrive per second. The average time required to service a request is .03 second. Assuming that interarrival times and service times are exponential, determine:a The probabili...
10 Aug 2020An average of 90 patrons per hour arrive at a hotel lobby (interarrival times are exponential), waiting to check in. At present, there are 5 clerks, and patrons are waiting in a single line for the first available clerk. The average time for a clerk to service a patron is 3 minut...
10 Aug 2020Indiana Bell customer service representatives receive an average of 1,700 calls per hour. The time between calls follows an exponential distribution. A customer service representative can handle an average of 30 calls per hour. The time required to handle a call is also exponenti...
10 Aug 2020There are four sections of the third grade at Jefferson Elementary School. The number in each section is as follows: section 1, 20 students; section 2, 25 students; section 3, 35 students; section 4, 40 students. What is the average size of a third-grade section? Suppose the boar...
10 Aug 2020Before a new product can be introduced, the activities in Table must be completed (all times are in weeks).ActivityDescriptionPredecessorsDurationabmADesign the product62106BSurvey the market5465CPlace orders for raw materialsA3243DReceive raw materialsC2132EBuild prototype of pr...
10 Aug 2020Telephone calls from New York to Los Angeles are transported as follows: The call is sent first to either Chicago or Memphis, then routed through either Denver or Dallas, and finally sent to Los Angeles. The number of phone lines joining each pair of cities is shown in Table.Citi...
10 Aug 2020Daisymay Van Line moves people between New York, Philadelphia, and Washington, D.C. It takes a van one day to travel between any two of these cities. The company incurs costs of $1,000 per day for a van that is fully loaded and traveling, $800 per day for an empty van that travel...
10 Aug 2020Oilco has oil fields in San Diego and Los Angeles. The San Diego field can produce 500,000 barrels per day, and the Los Angeles field can produce 400,000 barrels per day. Oil is sent from the fields to a refinery, in either Dallas or Houston (assume each refinery has unlimited ca...
10 Aug 2020Traffic MCNFPEach hour, an average of 900 cars enter the network in Figure 46 at node 1 and seek to travel to node 6. The time it takes a car to traverse each arc is shown in Table.Travel Times for Traffic ExampleTimeArc(Minutes)(1, 2)10(1, 3)50(2, 5)70(2, 4)30(5, 6)30(4, 5)30(4,...
10 Aug 2020The LINDO output in Figure 41 can be used to determine the critical path for Problem.PROBLEMConsider the (simplified) list of activities and predecessors that are involved in building a house (Table).ImmediateDurationActivityDescriptionPredecessors(Days)ABuild foundation5BBuild w...
10 Aug 2020Consider the (simplified) list of activities and predecessors that are involved in building a house (Table).ImmediateDurationActivityDescriptionPredecessors(Days)ABuild foundation5BBuild walls and ceilingsA8CBuild roofB10DDo electrical wiringB5EPut in windowsB4FPut on sidingE6GPa...
10 Aug 2020A company is planning to manufacture a product that consists of three parts (A, B, and C). The company anticipates that it will take 5 weeks to design the three parts and to determine the way in which these parts must be assembled to make the final product. Then the company estim...
10 Aug 2020Suppose as many as 300 cars per hour can travel between any two of the cities 1, 2, 3, and 4. Set up a maximum-flow problem that can be used to determine how many cars can be sent in the next two hours from city 1 to city 4. (Hint: Have portions of the network represent t = 0, t ...
10 Aug 2020Airline Maximum-FlowFly-by-Night Airlines must determine how many connecting flights daily can be arranged between Juneau, Alaska, and Dallas, Texas. Connecting flights must stop in Seattle and then stop in Los Angeles or Denver. Because of limited landing space, Fly-by-Night is ...
10 Aug 2020Sunco Oil wants to ship the maximum possible amount of oil (per hour) via pipeline from node so to node si in Figure 6.On its way from node so to node si, oil must pass through some or all of stations 1, 2, and 3. The various arcs represent pipelines of different diameters. The m...
10 Aug 2020
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