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Suppose that GLC earns a $2000 profit each time a person buys a car. We want to determine how the expected profit earned from a customer depends on the quality of GLC’s cars. We assume a typical customer will purchase 10 cars during her lifetime. She will purchase a car now (year 1) and then purchase a car every five years—during year 6, year 11, and so on. For simplicity, we assume that Hundo is GLC’s only competitor. We also assume that if the consumer is satisfied with the car she purchases, she will buy her next car from the same company, but if she is not satisfied, she will buy her next car from the other company. Hundo produces cars that satisfy 80% of its customers. Currently, GLC produces cars that also satisfy 80% of its customers. Consider a customer whose first car is a GLC car. If profits are discounted at 10% annually, use simulation to estimate the value of this customer to GLC. Also estimate the value of a customer to GLC if it can raise its customer satisfaction rating to 85%, to 90%, or to 95%. You can interpret the satisfaction value as the probability that a customer will not switch companies.
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Chapter 11 Solutions
Practical Management Science
- The game of Chuck-a-Luck is played as follows: You pick a number between 1 and 6 and toss three dice. If your number does not appear, you lose 1. If your number appears x times, you win x. On the average, use simulation to find the average amount of money you will win or lose on each play of the game.arrow_forwardAt the beginning of each week, a machine is in one of four conditions: 1 = excellent; 2 = good; 3 = average; 4 = bad. The weekly revenue earned by a machine in state 1, 2, 3, or 4 is 100, 90, 50, or 10, respectively. After observing the condition of the machine at the beginning of the week, the company has the option, for a cost of 200, of instantaneously replacing the machine with an excellent machine. The quality of the machine deteriorates over time, as shown in the file P10 41.xlsx. Four maintenance policies are under consideration: Policy 1: Never replace a machine. Policy 2: Immediately replace a bad machine. Policy 3: Immediately replace a bad or average machine. Policy 4: Immediately replace a bad, average, or good machine. Simulate each of these policies for 50 weeks (using at least 250 iterations each) to determine the policy that maximizes expected weekly profit. Assume that the machine at the beginning of week 1 is excellent.arrow_forwardMy home uses two light bulbs. On average, a light bulblasts for 22 days (exponentially distributed). When a lightbulb burns out, it takes an average of 2 days (exponentiallydistributed) before I replace the bulb.a Formulate a three-state birth–death model of thissituation.b Determine the fraction of the time that both lightbulbs are working.c Determine the fraction of the time that no light bulbsare working.arrow_forward
- Fortune magazine conducted a survey to learn about the subscribers in the United States and Canada. One survey question asked the value of subscribers' investment portfolios. The following percent frequency distribution was prepared from responses to this question: Value of Investment Percent Frequency <$25,000 17 $25,000-$49,999 9 $50,000-$99,999 12 $100,000-249,999 20 $250,000-499,999 13 $500,000-999,999 13 $1,000,000 or over 16 The percent frequency distribution is based on 816 responses. How many of the respondents reported having investments of $100,000 to $249,999? (Round to nearest whole number)arrow_forwardNo Pain Corp Omar Amman, the CEO of No Pain Corp (NPC), is under stress. They produce transcutaneus electrical nerve simulation units (TENS) for pain control. Amman faces a new opportunity and is not sure how to go about it. Recently, the the Department of Health of Canada has approved low current TENS devices to be sold directly to consumers without a doctor’s note. This will come into effect in three months. In the past, one needed a doctor’s note and could rent the device from some companies. These TENS machines, as they are called in Canada, are popular, since the older population has found them to be effective in pain control with almost no side effects. Amman can sell the device via drug-stores and pharmacies as well as on Amazon. But, Amman is not sure. Amman used to work as a supply chain manager for a power-tool company. Back then, it was a huge logistical “pain,” no pun intended, to work with large retailers and to attend to their fulfilment needs. Those retailers used to…arrow_forwardCassette tapes are still used in some handheld recording devices and in less expensive portable musical instrument recording devices. The desired speed of a cassette tape is 1.900 inches per second. Any deviation from this value causes a change in pitch and tempo and thus poor sound quality. Suppose that adjusting the tape speed under warranty when a customer complains and returns a device costs a manufacturer $20. Based on past information, the company knows the average customer will return a device if the tape speed is off the target by at least 0.200 inches per second; in other words, when the speed is either 2.100 or 1.700. Suppose that a technician tests the tape speed prior to packaging and can adjust the speed to the target of 1.900 at a cost of $6. What should the economic specification limit be? The data has been collected in the Microsoft Excel Online file below. Open the spreadsheet and perform the required analysis to answer the questions below. Questions 1. In the Taguchi…arrow_forward
- Cassette tapes are still used in some handheld recording devices and in less expensive portable musical instrument recording devices. The desired speed of a cassette tape is 1.900 inches per second. Any deviation from this value causes a change in pitch and tempo and thus poor sound quality. Suppose that adjusting the tape speed under warranty when a customer complains and returns a device costs a manufacturer $20. Based on past information, the company knows the average customer will return a device if the tape speed is off the target by at least 0.200 inches per second; in other words, when the speed is either 2.100 or 1.700. Suppose that a technician tests the tape speed prior to packaging and can adjust the speed to the target of 1.900 at a cost of $6. What should the economic specification limit be? The data has been collected in the Microsoft Excel Online file below. Open the spreadsheet and perform the required analysis to answer the questions below. Question 4. What are the…arrow_forwardGiven a normal distribution with μ= 105 and σ = 20, and given you select a sample of n = 16, complete parts (a) through (d). a. What is the probability that X is less than 92? P(X<92) 0.0047 (Type an integer or decimal rounded to four decimal places as needed.) b. What is the probability that X is between 92 and 93.5? P(92 X 93.5)= 0.0061 (Type an integer or decimal rounded to four decimal places as needed.) c. What is the probability that X is above 105.2? P(X 105.2)= 0.4840 (Type an integer or decimal rounded to four decimal places as needed.) d. There is a 67% chance that X is above what value? X = (Type an integer or decimal rounded to two decimal places as needed.)arrow_forwardA company is refurbishing smartphones out of used smartphones. They are able to produce three different quality levels (Gold, Silver, and Bronze). The revenue for selling x, y, and z units of the respective devices can be calculated as R(x, y, z) = 600x + 400y + 300z – x² – y? – 22. In order to refurbish the devices, they need to run through fine-tuned automated machines and have to pass a final quality check, which is done by employees. The required time for these two processes per quality level and the daily available machine and employee working times are displayed in the following table: machine minutes employee minutes Gold 60 Silver 40 Bronze 30 daily available time 800 100 The company wants to maximize the daily profit while using all available resources. Please calculate the critical points of that optimization problem. What is the respective revenue?arrow_forward
- Please do not give solution in image format thankuarrow_forwardplease answer this question in 30 minutes. Suppose that you are the manager of JCPenney store. Your goal is to increase and control the rate at which store cashiers can successfully sign customers up for JCPenney credit cards. To this end, for each of the eight store cashiers, you observed 50 interactions where the cashier made an attempt to sign a customer up for credit card. The data showed that there was a total of 16 cases in which the cashiers could successfully sign the customer up for a credit card. Now, if you do not want the lower limit to be below .0052, what z-value would this imply? How confident can you be that the actual lower limit is greater than or equal to .0052?arrow_forwardConsider a candy with 5 flavors; assume that you have a bag of this candy with many pieces of each. Imagine that you are on a strict diet that only allows you to eat 3 pieces of candy, and that to maximize your enjoyment of your treat, you will be eating this candy one piece at a time. First, how many possible outcomes are there for the first step (the first piece of candy eaten)? Your Answer:arrow_forward
- Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,