Deterministic techniques assume that no uncertain exists in model parameters. A: True
An inspector correctly identifies 90% of the time. For the next 10 products, the probability that he makes fewer than 2 incorrect inspections is .736. A: Use Binomial table to discover , add 3 probabilities for 0,1,2 A continuous random variable may assume only integer values within a given interval. A: False
A decision tree is a diagram consisting of circles decision nodes, square probability nodes and branches. A: False
A table of random numbers must be normally distributed and efficiently generated A: False
Simulation results will always equal analytical results if 30 trials of the simulation have been conducted. A: False
Data cannot exhibit both trend and cyclical patterns.
A: False
The Delphi method develops a consensus forecast about what will occur in the future. A: True
A company markets education software products and is ready to place three new products on the market, past experience has shown that for this particular software. The chance of success is 80%. Assume that the probability of succeed is independent for each product, what is the probability that exactly 1 of the 3 products is successful. A: binomial answer use table
_ is a measure of dispersion of random variable values about the expected value. A: Standard Deviation
The _ is the expected value of the regret for each decision. A: expected opportunity loss
A seed value is a
A: number used to start a stream of random numbers
Pseudonrandom numbers exhibit _ in order to be considered truly random. A: uniform distribution
Random numbers generated by a _ process instead of a _process are psudorandom numbers. A: mathematical/physical
200 imulations runs were completed using the probability of a machine breakdown from the table below . the average number of breakdowns from the simulation trials was 1.93 with a standard deviation of .20. A: .71
Which of the following possible values of alpha...
...Article Review 1
DeGeorge, B., Santoro, A. (2004). “Manipulatives: A HandsOn Approach to Math.” Principal, 84 (2), (2828).
This article speaks about the importance and significance of the use of manipulatives in the classroom, specifically in the subject of math. Manipulatives have proven to be valuable when used in a math class and are even more valuable to the children when they are young, and are learning new math concepts. Students are able to physically visualize the math concepts and gain knowledge because they understand what they’re learning a whole lot better and they also are able to gain insights on those concepts. Different examples of manipulatives may include counting with beans or M&M’s, using pattern blocks, puzzles, tangrams, and flash cards, just to name a few.
Using manipulatives in a math class are beneficial to both the student and the teacher because the teacher is able to explain the concepts to the students in a much easier manner using the handson technique, rather than explaining it verbally. It’s especially beneficial to the student because by incorporating these manipulatives into their learning process, they are able to pick up the concepts much quicker and in a way that they better understand, yet are having fun while doing it. When they have the concepts down, the students’ selfesteem goes up and they feel encouraged to keep on going.
After...
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ANALYSIS
Physics has a lot of topics to cover. In the previous experiments, we discussed Forces, Kinematics, and Motions. In this experiment, the focus is all about Friction. Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction like fluid friction which describes the friction between layers of a viscous fluid that are moving relative to each other; dry friction which resists relative lateral motion of two solid surfaces in contact and is subdivided into static friction between nonmoving surfaces, and kinetic friction between moving surfaces; lubricated friction which is a case of fluid friction where a fluid separates two solid surfaces; skin friction which is a component of drag, the force resisting the motion of a fluid across the surface of a body; internal friction is the force resisting motion between the elements making up a solid material while it undergoes deformation and sliding friction.
When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into heat. This property can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start a fire. Kinetic energy is converted to heat whenever motion with friction occurs, for example when a viscous fluid is stirred. Another important consequence of many types of friction can be wear,...
...
The case between Beauty and Stylish involves concept of a valid contract, precontractual statements, express term and misrepresentation.
A valid contract is established between Beauty and Stylish when an offer is accepted and there is intention for both parties to create legal relations. An offer refers to the expression of willingness of the offerer to be contractually bound by an agreement if his or her offer is properly accepted. It has to be clear and certain in terms. It must also be communicated to the offeree before it is being accepted. In addition, the acceptance has to be unqualified, unconditional and made by a positive act. In the case of Beauty and Stylish, a positive act refers to the signing of the contract. All terms of the offer must be accepted without any changes and cannot be subjected to any condition, taking effect only upon fulfillment of that condition. When Beauty and Stylish enter into the agreement, they must intend to bind and bound legally to each other by their agreement. This is the intention to create legal relations between two parties. In the meanwhile, this contract must possess consideration. A contract must therefore be a twosided affair, with each side providing or promising to provide something of value in exchange for what the other is to provide.
Every contract, whether oral or written, contain terms. The terms of a contract set out the rights and duties of the parties. Terms are the promises and undertakings given by each...
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ECO 550 Midterm Exam
1. A change in the level of an economic activity is desirable and should be undertaken as long as the marginal benefits exceed the ____.
2. The level of an economic activity should be increased to the point where the ____ is zero.
3. The ____ is the ratio of ____ to the ____.
4. The standard deviation is appropriate to compare the risk between two investments only if
5. The approximate probability of a value occurring that is greater than one standard deviation from the mean is approximately (assuming a normal distribution)
6. An closest example of a riskfree security is
7. In the shareholder wealth maximization model, the value of a firm's stock is equal to the present value of all expected future ____ discounted at the stockholders' required rate of return.
8. The form of economics most relevant to managerial decisionmaking within the firm is:
9. Shirking of one’s duties is often encountered in team production settings because
10. A Real Option Value is
11. Economic profit is defined as the difference between revenue and ____.
12. The Saturn Corporation (once a division of GM) was permanently closed in 2009. What went wrong with Saturn?
13. An income elasticity (Ey) of 2.0 indicates that for a ____ increase in income, ____ will increase by ____.
14. An increase in each of the following factors would normally provide a subsequent increase in quantity demanded, except
15....
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ECO 550 Midterm Exam
1. Which of the following will increase (V0), the shareholder wealth maximization model of the firm: V0∙(shares outstanding) = Σ∞t=1 (π t ) / (1+ke)t + Real Option Value
2. The flatscreen plasma TVs are selling extremely well. The originators of this technology are earning higher profits. What theory of profit best reflects the performance of the plasma screen makers?
3. Income tax payments are an example of ____.
4. Various executive compensation plans have been employed to motivate managers to make decisions that maximize shareholder wealth. These include:
5. Recently, the American Medical Association changed its recommendations on the frequency of papsmear exams for women. The new frequency recommendation was designed to address the family histories of the patients. The optimal frequency should be where the marginal benefit of an additional paptest:
6. The moral hazard in team production arises from
7. A change in the level of an economic activity is desirable and should be undertaken as long as the marginal benefits exceed the ____.
8. The approximate probability of a value occurring that is greater than one standard deviation from the mean is approximately (assuming a normal distribution)
9. Based on riskreturn tradeoffs observable in the financial marketplace, which of the following securities would you expect to offer higher expected returns than corporate bonds?
10....
...DUNDALK INSTITUTE OF TECHNOLOGY 




Bachelor of Science in Computing in Applications & Support  Semester 3 
Bachelor of Science in Computing in Networking & Support  Semester 3 
Bachelor of Science in Computing in Software Development  Semester 3 


Data Analysis for Computing 

Christmas 2010 










Dr. Fiona Lawless 






Answer any FOUR questions 
All questions carry equal marks 



DO NOT TURN THIS PAGE UNTIL INSTRUCTED 
Question 1.
(a) The following 20 numbers relate to response times recorded when the new Carrolls
network was being tested:
30.9  41.1  1.2  30.6  35.2  25.8  15.0  35.8  32.9  20.7 
29.7  12.4  32.7  33.5  21.6  38.9  33.2  17.9  43.6  41.2 
Using a class width of 10, construct a grouped frequency distribution for this data set and then estimate the mean response time. Explain why your answer is only an estimate of the mean of this data set.
(5 marks)
(b) The numbers of SPAM EMAILS received by 750 DKIT computing students over a one week period, were recorded as follows:
No of SPAM EMAILS Received  Number of students 
less than 5  68 
between 5 and 10  176 
between 10 and 15  244 
between 15 and 20  193 
between 20 and 25  42 
between 25 and 30  27 
(i) Calculate the mean number of SPAM emails...
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ECO 550 Midterm Exam
1. Which of the following will increase (V0), the shareholder wealth maximization model of the firm: V0∙(shares outstanding) = Σ∞t=1 (π t ) / (1+ke)t + Real Option
2. Shirking of one’s duties is often encountered in team production settings because
3. The Saturn Corporation (once a division of GM) was permanently closed in 2009. What went wrong with Saturn?
4. Possible goals of NotForProfit (NFP) enterprises include all of the following EXCEPT:
5. Recently, the American Medical Association changed its recommendations on the frequency of papsmear exams for women. The new frequency recommendation was designed to address the family histories of the patients. The optimal frequency should be where the marginal benefit of an additional paptest:
7. The level of an economic activity should be increased to the point where the ____ is zero.
8. The primary difference(s) between the standard deviation and the coefficient of variation as measures of risk are:
9. The ____ is the ratio of ____ to the ____.
10. The approximate probability of a value occurring that is greater than one standard deviation from the mean is approximately (assuming a normal distribution)
11. Generally, investors expect that projects with high expected net present values also will be projects with
12. The standard deviation is appropriate to compare the risk between two investments only if
13. Marginal revenue (MR) is ____ when total...