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Practical Operations Management 2nd Edition Natalie Simpson - Solutions
PERT assumes that path lengths through a network can be modeled with what type of probability distribution?
When crashing a project, a manager generally focuses on which activities first?
A point of significance in the time line or history of a project is referred to as a what?
Which technique better reflects uncertainty in project management, PERT or CPM?
If the early start time of a critical path activity is 7, what is its late start time?
If the early start time of a task is 4 days and its early finish time is 6 days, how long is this task?
If tasks are always finished on their deadlines and never earlier, is this timing known as forward or backward scheduling?
If a noncritical path activity is crashed, what happens to the overall duration of the project?
Task C has two immediate predecessors, tasks A and B. Task A has an early finish time of 3 days, and task B has an early finish time of 5 days. What is the early start time of task C?
Task C has two immediate predecessors, tasks A and B. Task A has an early finish time of 3 days, and task B has an early finish time of 5 days. Task C is 2 days long. What is the early finish time of task C?
Task C has two immediate followers, tasks D and E. Task D has a late start time of 10 days and task E has a late start time of 8 days. What is the late finish time of task C?
Task C has two immediate followers, tasks D and E. Task D has a late start time of 10 days and task E has a late start time of 8 days. Task C is 2 days long. What is the late start time of task C?
Task E has an early start time of 3 days and an early finish time of 5 days, while it also has a late start time of 10 days and a late finish time of 12 days from now. What is the slack in task E?
Task A has an optimistic time of 3 days, a mostly likely time of 4 days, and a pes- simistic time of 10 days. What are the expected time and the variance in task A?
A project consists of four tasks: A, B, C, and D. Task A must be completed before B and C are started, and task C must be completed before task D is started. How many paths are in this network?
A project consists of four tasks: A, B, C, and D. Task A must be completed before B and C are started, and task C must be completed before task D is started. Each task takes 1 day to complete. What is the duration of this project?
A project network has a total of four paths running through it. These four paths vary in length, from a minimum of 4 days long to a maximum of 18 days long. How long will this project take to complete?
There are four activities on the critical path, and these activities have standard deviations of 1, 2, 4, and 2 days, respectively. What is the standard deviation of this critical path?
A project network has two paths running through it. The first path has an expected length of 10 days and a variance of 2 days. The second path has an expected length of 11 days and a variance of 1 day. What is the probability that this project can be completed in 12 days?
A project network has two paths running through it. The first path has an expected length of 10 days and a variance of 2 days. The second path has an expected length of 11 days and a variance of 1 day. What is the probability that this project will require more than 14 days to complete?
Path A-B-E has a 55% probability of being completed within 3 weeks. Path C-D-F has a 90% probability of being completed within 3 weeks. If these are the only two paths in a project network, what is the probability the project will be completed in 3 weeks?
A certain office building must be renovated and then sold. Renovation of similar buildings has taken an average of 4 weeks, with a standard deviation of 1 week. Once placed on the market after renovation, buildings like this one take an average of 10 weeks to sell, with a standard deviation of 2
Consider the following project management problem:a. What is the expected completion time of this project?b. What is the critical path through this project? Task Immediate Predecessor(s) Duration (days) A None 2 B None C None 8 D A 1 E B, D 6 F D 2
Consider the project information in the table below:Draw and analyze a project network diagram to answer the following questions:a. If you were to start on this project, which are the activities that you could start on at the very beginning of the project?b. How many paths are there in this project
Consider the following project, which consists of 10 tasks:a. What is the critical path through this network? What is the completion time of this project?b. What is the slack in task F?c. Suppose the project has just been started. What is the longest you could delay beginning work on activity A
Mega Mart Store is a discount department store badly in need of renovation. To avoid loss of sales and disruption of customer shopping habits, Mega Mart wants to complete this renovation without closing the store itself, by temporarily colocating goods from one area of the store into another,
Consider the following project network, with task duration data provided:Please answer the following questions, based on your analysis of this diagram.a. What is the critical path through this network?b. What is the completion time for this project?c. What is the slack in activity A?d. All tasks
Jersey Warehouse packs and ships customer orders for three large online retailers. Jersey Warehouse normally operates continuously, but is planning to shut down next week to replace its computer servers. This highly sensitive project consists of four tasks, described in the table below:Please
The Schulz School of Business Administration (SSBA) is planning its annual commencement ceremony, to be held in the university's indoor arena. The university has granted SSBA use of this facility for 6 hours start- ing at 11 a.m., just after the School of Engineering holds its commencement in the
Convex Productions has just received a contract to film a commercial video that will air during a major sporting event in North America, and then be available on-demand through banner advertisements on the inter- net. For planning purposes, Convex Productions has decided to treat this contract like
Summerline Contracting has just been awarded the Dalvey Point Storm Water Upgrade Project, a major and time-sensitive contract worth sev- eral million dollars. The Dalvey Point area is a retail district in a busy city center, drawing its name from the distinctive Dalvey Point Shop- ping Center at
How does a NIMBY argument potentially relate to the issues of productivity and sustainability?
Where is your college or university located and what factors best explain this? What types of factors are these?
What impact did introduction of the intermodal container to logistics have on loca- tion planning?
Costs incurred at a facility even when it is idle are called what?
What is the viewpoint of someone nicknamed a NIMBY?
What are costs that vary with volume of associated activity called?
Which does not support the flow of information between supply chain partners, intermodal containers or paper forms?
If goods are available under standard terms EXW is the buyer or seller responsible for the goods' clearing customs?
Would passenger airlines or a bicycle courier service be an example of a hub-and- spoke network?
Which is less accessible, air freight or maritime shipping networks?
Which logistical mode is most appropriate for a small shipment that must be some- where very fast and far away?
In center of gravity, if all destinations require the same degree of service, should their coordinates be added or averaged?
If factor A is given a weight of 0.2 and factor B a weight of 0.4, what does that imply about factor B when compared to factor A?
Which technique is more subjective, center of gravity or factor rating?
Which alternative is preferable at a point of indifference?
ART Contractors must locate an equipment staging area to serve three construction sites, located at coordinates (0, 2), (0, 4), and (5, 5). Traffic between the staging area and each of the three sites will be equal. What is the best set of coordinates for the equipment staging area?
ART Contractors must locate an equipment staging area to serve three construction sites, located at coordinates (0, 2), (0, 4), and (5, 5). Traffic between the staging area and each of the three sites is 30 trips a week, except for the site located at (5, 5), which is only 10 trips a week. What is
A manufacturing firm is considering two locations for a plant to produce a new prod- uct. Location A has a fixed cost of \($80,000\) and a variable cost of \($20\) per unit. Loca- tion B has a fixed cost of \($120,000\) and a variable cost of \($15\) per unit. The firm plans to manufacture 20,000
A manufacturing firm is considering two locations for a plant to produce a new product. Location A has a fixed cost of \($80,000\) and a variable cost of \($20\) per unit. Location B has a fixed cost of \($120,000\) and a variable cost of \($15\) per unit. What is the firm's point of indifference
You are reading a magazine article with the title "The Top 100 Undergraduate Busi- ness Programs." The article mentions that the magazine's staff collected data on various undergraduate programs including enrollment, average class size, and aver- age starting salary at graduation. The staff then
If location A scored 1127.2 in a factor rating study and location B scored 903.9, which location would be selected as a superior choice?
If a location received a score of 60 for appearance and 40 for access, what would its factor rating score be if each factor were assigned a weight of 1/2?
If a location received a score of 60 for appearance and 40 for access, what would its factor rating score be if appearance were assigned a weight of 1/4 and access a weight of 3/4?
A manufacturing firm is choosing a new location based on five factors. It considers all these factors to be equally important. What weights should it assign each factor in a factor rating analysis?
PowerBright must decide between two locations on which to build a new power station to provide 60 megawatt-hours of electricity a month. Location A would have a variable cost of \($1,000\) per megawatt-hour and location B would have a variable cost of \($1,500\) per megawatt-hour. A power station
Best Purchase must select a location for a new store. Best Purchase has identi- fied five factors as important to store location: land cost, road access, population density, average income, and zoning laws. Best Purchase feels that each of these factors has the same importance to a new store
A manufacturing firm is choosing between two locations based on factors A and B. The first location scored 10 for factor A and 90 for factor B. The second location scored 90 for factor A and 10 for factor B. Over what range of weights for factor A would this firm select the first location?
E-Me, a chain of personal electronics superstores, distributes merchandise to its 300 retail outlets from five regional warehouses. E-Me wants to locate a new central distribution center that would supply each of these five regional warehouses. E-Me has determined these coordinates of each regional
Garysburg Fire Rescue (GFR) is considering three different locations for a new fire station. Using factor rating, GFR has created the following table:When rating these locations, GFR used a 5-point scale, where 1 means unfavorable and 5 means excellent.a. Which of the following statements are true
Tom, David, Dale, and Murdock are four business students who want to rent a four- bedroom apartment together for the fall semester. They have identified the three factors important to them in choosing a location for their apartment: proximity to campus, cost of rent, and quality of common areas
West Calder Fabrication is trying to decide in which of the following three cities to locate a new production facility, and has gathered the following information about each:a. If this facility will produce 5,000 units annually, where should West Calder locate it?b. What is the point of
Consider the following map of six cities, indicated by the six dark-numbered points. The five light-colored points labeled A through E indicate five candidate locations for a new warehouse that will ship to each of the six cities:a. If the amount to be shipped from the new warehouse is equal for
Fulton Logistics must purchase land to locate a new freight container yard. This yard will be a satellite location to relieve overcrowding at Fulton's existing yard next to the Port of Endover. Fulton is considering four loca- tions that are at different distances from the port, because real estate
Gamma Distribution is building a new distribution center to supply five of its regional warehouses. These warehouses are located in cities in the eastern portion of the United States, which Gamma has gridded to obtain the following coordinates: Questions 1. Temporarily assume that Gamma
Celvin FoodStuff operates a chain of mini conve- nience stores in downtown city settings, offering beverages, snack food, and some fresh food items to passing pedestrian traffic. A typical Celvin Foodstuff is half the size of the average convenience store, with no customer parking and almost no
How does the analysis from the supplier position and supplier preferencing models affect how a purchasing manager plans to do business with suppliers?
Why is the organization's structure important in how the supply chain management function operates?
How can good boilerplate terms and conditions of contract still fail to protect an organization against some risk?
Do the steps of a procurement process differ, depending on the risk and/or value of what is being purchased?
Is the end customer upstream or downstream from a manufacturer?
Is a tier 1 supplier associated with the inbound or outbound logistics of another firm?
In the supplier positioning model, the X and Y axes are composed of what?
In the supplier preferencing model what does core represent?
Would a centralized supply management function assign purchasing decisions to individual managers at each of an organization's locations?
Who has greater authority, a sales representative or a sales agent?
In purchasing, a bid or cost estimate provided by a potential supplier is commonly called a what?
In purchasing, when someone acts with authority that they don't formally possess, is this known as apparent or actual authority?
In purchasing, a PO is understood to be what?
Are standard terms and conditions for a contract often referred to as boilerplate or as ABC policy?
The favored type of negotiation that generally provides the best results is called what?
Comparing your organization's processes and performance metrics with other top performing or best-in-class organizations is called what?
Using the supplier positioning/preferencing models you identify that the goods to be purchased fall within the strategic critical/core quadrants of the models. What sort of contract should you consider entering into?
Speedy Aircraft Maintenance is a regional provider of aircraft repair ser- vices. Speedy Aircraft's procurement department is preparing to replace all its business computers, working from a budget of \($1,000,000\) to be spent over the next 4 years. Four suppliers have been identified that could
The procurement department of Horizon Hotels is working on construction of its newest hotel resort. Four tenders have been received by the depart- ment, which has evaluated these offers for quality based on a 100-point scale in which a company can earn at most 50 points for its method statement, at
Champions' Gate Sports Camp operates four consequective 8-week residen- tial training sessions for young athletes. Each sports camp session hosts 150 student athletes and 30 staff members at the Champions' Gate Sports Com- plex, which provides athletic facilities, classroom space, dormitories, and
The economic model of waiting lines minimizes the combined cost of waiting and what other cost?
In an M/M/1 system, if the customer arrival rate increases while service times remain the same, what happens to the waiting line for that service? What happens to the service system's utilization rate?
When an arriving customer leaves after joining an existing line for service but before being served, this behavior is called what?
What type of capacity assumes ideal operating conditions?
What type of capacity assumes normal operating conditions, including breaks for maintenance, etc.?
What is idle capacity maintained to absorb unexpected demand called?
A classroom has a design capacity of 60 seats and an effective capacity of 55 seats. If 45 students attend a class held at that location, calculate the utilization of that classroom during that class.
A classroom has a design capacity of 60 seats and an effective capacity of 55 seats. If 45 students attend a class held at that location, calculate the efficiency of that classroom during that class.
Branton Electric is considering the purchase of an entire cargo container filled with upgraded utility meters for $15,000. Branton can charge $50 for the installation of each upgraded meter, while the actual cost of the installation would be only $5. How many utility meter upgrades are necessary
A particular parking garage is designed with 1,000 spaces in which to park 1,000 individual cars. Assume, however, that every Mercedes car needs two such spaces. What then is the design capacity of the parking garage if it were dedicated to storing only Mercedes cars?
Customers arrive an average of 10 per hour and an average of 16 customers can be served in an hour. Assuming this is an M/M/1 model, what is the system utilization?
Customers arrive an average of 10 per hour and an average of 16 customers can be served in an hour. Assuming this is an M/M/1 model, what is the average length of the line?
Customers arrive an average of 10 per hour and an average of 16 customers can be served in an hour. Assuming this is an M/M/1 model, what is the average number of customers in the system?
Customers arrive an average of 10 per hour and an average of 16 customers can be served in an hour. Assuming this is an M/M/1 model, what is the average amount of time spent waiting in the line?
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