P370 quizzes
What is the total crash cost required to complete the project in 16 days?
$900
Above is a regression analysis of data from a process that is undergoing learning. The initial raw data was entered in minutes. Predict how many minutes the 95th unit will require.
18.1
A project has a critical path with a duration of 20 weeks and a standard deviation of 4 weeks. There is a 35% chance the project will be completed in X weeks or less. What is X? Select the closest answer.
18.4
What is the slack time for Activity F and the late start for Activity H?
2 weeks, 12 weeks
Customers arrive at an ice cream store at the rate of 15 per hour. The owner attempts to serve in a first-come, first-serve priority. The mean time to serve a customer is 3 minutes. What is the probability of walking into the store and not having to wait?
25%
What is the expected duration of the non-critical path BCDEGH?
26
Suppose we are using the CPM with three time estimates (PERT) to schedule a project. What is the variance of the length of the critical path, if there is a 92.22% probability that the project will be completed within the expected duration plus three time periods? Select the nearest correct answer. (HINT: Use the Z formula to find the value)
4.46
If the 13th unit processed requires 87.00 minutes and the 26th unit requires 64.00 minutes, how much time would you estimate the 50th unit requires? (round to nearest whole number)
48 minutes
Acme Widgets had an order to process 250 widgets. The first unit required 200 minutes to assemble. Before starting, the company estimated the amount of time it would require to assemble all 250 widgets if they learned at an 85% rate. After assembling all 250 widgets, Acme realized they had learned at an 80% rate. How much time less than their estimate did Acme take? You should be able to compute the answer within plus or minus 2 hours.
91.2 hours
The customer contact approach holds that:
A low‑contact service operation can operate more efficiently than a high‑contact service.
The service industry is the fastest growing segment of our economy. As we move into the 21st Century, operations management will deal with a number of issues. Which of the following statements is true concerning the service sector of our economy?
A low‑contact service operation generally operates more efficiently than a high‑contact service.
Which of the following statements is true with regard to best operating level?
All of these answers are true
Which of the following statements about queue psychology is most true?
All of the above statements are true.
A local fast food restaurant wants to analyze its drive-thru window. At this time, the only information known is the average number of customers in the system (4.00) and the average time a customer spends at the restaurant (1.176 minutes). What is the arrival rate (λ) and the service rate (μ)?
Arrival rate = 3.4 customers/min. Service rate = 4.25 customers/min.
The Strategic Planning Process is characterized by which of the following activities?
Both A and B are correct.
Spaceley's Sprockets has just developed a new product. George Jetson, the Head of Product Development, feels that the product is a winner, but he also feels it would be an even better product if waited six more months for further development before launching. Unfortunately, Spaceley's closest competitor, Cogsley's Cogs, has a similar product in the development pipeline. George feels that if he launches the product now to get a head start on Cogsley, he has a 50% chance of achieving a high level of sales, a 30% chance of a medium level of sales, and a 20% chance of a low level of sales. If he waits, he has a 30% chance of a high level of sales, and a 70% chance of a medium level of sales, with no chance of a low level of sales. High sales represents 100,000 units, medium sales represents 65,000 units, and low sales represents 10,000 units. If his objective is to maximize his expected number of units sold, what should George do and how many units would he be expected to sell?
Delay six months, 75,500 units
Which of the following factories is the most productive?
Factory X3A, which uses 57 units of input to produce 58 units of output
In a traditional retail banking branch, which of the following most closely relates to a reactive system?
Getting a document notarized in person.
What is the "Big Question" answered by the Operations function (simplified):
How?
Which of the following measures is a partial productivity measure?I. Output/LaborII. Output/MaterialsIII. Output/(Labor+Energy+Capital)IV. Output/Inputs
I and II only
As Project Manager, it is important to deal with the people issues as well as scheduling. Which of the following would NOT require your time and attention?
In pure project structure, the team member's frustration in dealing with two bosses.
Which of the following statements is false?
In the product-process matrix, only businesses "on the diagonal" are possible.
Current issues in OSCM do not include:
Increasing global supply chain employment
The heart of Operations Management is the management of production systems. A production system uses to provide goods and services to the customer.
Input, Transformation, Output
Productivity increases when:
Inputs decrease while outputs remain the same.
As project manager, it is important to deal with the people issues as well as scheduling. Which of the following project organizational structure would require your time and attention to handle team members' frustration in dealing with two bosses?
Matrix project structure
What is the minimum cost to reduce the project by three time periods?
None of the above answers are correct
Which of the following statements is false?
Organizations do not experience learning, only people do.
Which of the following statements is true?
Positive values for n indicate that we are experiencing "unlearning" (we are getting worse over time).
The service sector is now the largest employer of US citizens. As we look ahead to the future, and knowing services are the "younger sector, yet fastest growing sector", which of the following statements is most accurate?
Productivity gains in the service sector will be a bigger challenge than productivitygains in the manufacturing sector.
Management decisions within the operations function can be classified into the following levels:
Strategic, tactical, and operational planning and control.
Which of the following is a definition of productivity? (think of the formula here)
The amount of output per hour worked
A project has three sequences of activities (paths), two of which are critical. The critical paths of this project can be characterized in the following way:
The chain of activities (from start to finish) that has the largest sum of activity durations.
Which of the following would NOT be considered in deciding how far to crash a project?
The normal duration times of tasks not on a critical path.
Service systems with high customer contact :
Usually experience more variability.
Which of the following equations represents the best estimate of the learning process based on the regression output?
Yx = 102.98x -.2305
A process is learning at a 92% rate. The first unit required 70 minutes. How many units must be processed before the company cuts the processing time to 28 minutes?
between 2,000 and 2,100 units
Consider the following regarding learning curves: I. The mathematical relationship between time to perform a task and experience is generally linear.II. A learning rate of 85% is superior to a learning rate of 80%III. The value of n is always negative for learning to occur.IV. The value for k can be read directly from the Excel regression output (i.e. no transformation is needed). Choose the correct response below:
items I, II and IV are false; item III is true
As you move from a job shop to a batch process, which of the following statements is true?
the equipment becomes more specialized.
As you move from a job shop to a continuous flow process, which of the following statements is true?
the equipment becomes more specialized.
