ECON10005 QUANTITATIVE METHODS 1
Assignment 2 Semester 1, 2013
This assignment has four questions, and is due by 5.00pm on Thursday 2 May. It is to be submitted electronically as a .pdf ﬁle using the assignment tool on the subject’s LMS page. Marks depend on your tutor being able to understand your statements and arguments, so marks may be deducted for poor presentation or unclear language. Use nothing smaller than 12 point font. If you wish to write your assignment by hand and scan the ﬁle into a .pdf format, you may, though any illegible content will not be marked. You may work in groups of up to 4 students from the same allocated tutorial. Groups should nominate one student to submit the assignment for the whole group, with each student’s name and student number included in the document. This assignment has a total of 40 marks available and may contribute up to 10% of your ﬁnal mark in this subject. Question 1 (5 marks) Recall the concept of the sampling error from the ﬁrst and second weeks of semester. In lectures in Week 6, we considered an example in which Optus was estimating the mean telephone expenditure of a household. In the context of that example, answer each of the following questions. Where calculations are required, show all your workings. (a) Suppose we know from experience that the population standard deviation is 1200, and we want a 90% conﬁdence interval for the population value of annual telephone expenditure with an error of estimation (ie the sampling error) no greater than $50. What sample size should we use? (3 marks) (b) Suppose we want a 90% conﬁdence interval for the population value of annual telephone expenditure that is no wider than $100. What sample size should we use? (1 mark) (c) Explain in words what parts (a) and (b) tell us about the relationship between sampling error and the width of a conﬁdence interval estimate. (1 mark)
1
Question 2 (21 marks) You are consulting for a farmer who grows and supplies millions of...
...phones to school. It is very reasonable because bringing phone toschool potentially disrupts the learning process. Moststudents use cell phones irresponsibly. They use cell phones to talk to their friend during class time. They also use the calculator and camera features in the class as well. Those potentially lead less concentration in the time of learning and teaching process.
Students go to school to learn and behave fair way. Mobile phones provide a large temptation to cheat in tests. They can communicate to anyone and almost anywhere in the world. Because of the small size of the cell phone, students can send a text quietly and discreetly. The text can go unnoticed anywhere to get help on answering tests, homework, and other class assignment. Learning in school is to behave fair not cheating.
Therefore, schools should ban students from bringing their cell phones. However it should be done fairly. In case of an emergency some student need a call for help, providing easy access to phone is better.
NEVER TRY SMOKING
A lot of people, especially teenagers, who do not smoke,always want to try smoking. They know it is bad for them and all, but it is just something they want to try. So they ask one of their smoker friends for a cigarette. Admittedly, they firstly can not light it on their own so they ask his friend to do it. Then they inhale that cigarette and smoke occasionally.
Apparently that makes them the born smokers. Now they do smoke fairly...
...Subject Code: ECOM90009
Subject Name: Quantitative Methods for Business
Assignment Number: 2
Workshop Day and Time: Thursday 02:15pm
Tutor Name: Jackson Yuen
Student ID Number
Student Name
1.
2.
3.
4.
Question 1:
a.
Count
150
Mode
22
Sum
3231
Standard Deviation
4.728
Range
29
Sample Variance
22.357
Maximum
36
Coefficient of Variance
0.22
Minimum
7
Mad
3.0
Mean
21.54
25th percentile
18.5
Median
22
75th percentile
25
The central location of the distribution includes mean, median and mode. As illustrated above, the mean number, median number and mode number of the distribution of installation times are 21.54,22 and 22. There are little differences among the three numbers which means that the shape of the distribution is nearly symmetric.
The variance of the installation time of this sample is 22.357 while the standard deviation is 4.728. The installation time ranges from 7 minutes to 36 minutes. The coefficient of variance is 0.22 which is low. The mad of the sample is 3.0.
The first quartile is 18.5 indicating that 25% of the purchasers’ installation time is less than 18.5 minutes. However the third quartile is 25 which shows that 75% of the purchasers spent less than 25 minutes to install the software.
b.
Yes, we are able to estimate the mean installation time using this data. We do not know the variance of the population so we need to standardise the mean of...
...
Bangladesh Open University
CEMBA/CEMPA Program
Semester 122
Course : Management and Organization Submit by : September 20, 2013
Instructions for Assignment Submission
1. Assignments must be submitted on A4 size paper in own hand writing.
2. Completed cover must be used on the top of each assignment (For specimen cover page, see page3 of the Semester Calendar)
3. Assignments must be submitted to the coordinator of the study center you are attached with.
4. Spiral binding must be avoided. Instead, transparent folder or file cover or any other soft binding may be used.
5. Contact email address & Cell Phone and Land Phone numbers must be written on the cover page clearly. If your email address is not yet added to our email list, please send a mail to coordinator.cemba@gmail.com with subject “Add Me”.
6. In the case of delayed submission, the School will not acknowledge the submission of the assignment(s) and will not be responsible for any damage or loss of the assignment(s).
7. If it is noticed that your assignment is copied from another student’s assignment, your assignment will be cancelled automatically.
1. (a) Why the employees of an organization should have knowledge about organizational behavior?
(b) State from your work experience and your knowledge of organizational issues, the critical changes and challenges...
...ECMT1020 Written Assignment
(Note: All numbers will be round up to 3 decimal places)
a) The estimated of the elasticity of demand is 2.040, indicating that the demand for movie ticket is inelastic. Since the pvalue (0.000) is less than, we can conclude that at 5% significance level, the price (which is the estimation of elasticity of demand) coefficient is not zero and that the elasticity of demand will lies between 2.689 and 1.391.
b) The value of is 0.354 meaning that the regression model accounts 35.4% of the variation of the dependent variable, leaving 64.6% unexplained variation. Compared to the in part a), it has increases by 32.1% suggesting that additional of other independent variables have influences on the attendance of the film. The overall variables have coefficients which are significantly different from zero at 1% level of significance, as the pvalues are all less than 0.01.
Price (): An increase in price will leads to approximate 2 number decreases in attendance
Budget (): An increase in budget will lead to 0.202 units increase in number of attendance. This suggests that greater investment in production gives better quality of movies thus more people are willing to watch movie.
Week (): A greater number of weekofreleases of film at cinema on date of observation will causes 0.292 units decrease in number of people watching movie as more people prefer to watch the film as soon as it is released.
Sequel (): If the film is...
...Business
BEO5539 BUSINESS STATISTICS/
BEO6501 QUANTITATIVE ANALYSIS
ASSIGNMENT 1 (GROUP ASSIGNMENT) – 30%
This group assignment requires your team to apply statistical knowledge and skills learned from
BEO5539 lectures between week 2 and 7. Please note the following:
(a) Each assignment group will comprise no more than 3 members. Each team member is
expected to work collaboratively with one another and contribute their fair share of effort in
completing this group assignment. Team members must be from the same tutorial group. It
is important that there is coordination among team members to ensure this assignment is
duly completed and submitted by the deadline.
(b) Real data must be used for this assignment. The variables for this group assignment are
identified in Table 1 below. These variables can be extracted from Orbis database via
http://library.vu.edu.au/search/f?SEARCH=orbis&sortdropdown=
(c) In Orbis database, please:
 select 3 countries (at least one developed country and one developing
country);
 select one industry (same industry for the 3 countries);
avoid selecting data from 2014 because significant amount of the 2014 data
is yet to be released through this database. Missing data must not be
included in the analysis and therefore must be deleted from the spreadsheet.
 note that the listed companies extracted from Orbis database are used to
infer...
... Question 1a
Not all agreement is a legally enforceable contract, only certain time of agreement with cohold to the rule of law of contract will become enforceable and such criteria have to be satisfied.
A contract to be legally binding or enforceable must include 4 essential elements as follow:
1) The relevant legal capacity to enter into a contract is the first element despite that there are other 3 existing elements; this is in relation to age and mental condition of the relevant contracting parties.
2) Agreement (Arising that an offer is made and accepted)
3) Consideration  an exchange of some benefit or something of value to the parties, for instance; there is monetary gains for products and services rendered.
4) The parties must have the intention to enter into a legal relationship which is the binding agreement.
The agreement will not stand when one or more components above are not in place.
Offer and Acceptance is generally used to decide whether a legally binding agreement exists between two parties in such traditional approach in contract law.
A contract exists when an offer is accepted (agreement to the terms in it) and is communicated to the offeror by the offeree.
In according to the case of Gunthing v Lynn (1831), the offeror offered to buy a horse “if it was lucky”. The court was held that the offer was unclear for it to stand.
Francis (as “offeror”) and Jim (as “offeree”) that Francis is willing to enter into an agreement...
...PHYSICS DEPARTMENT
ASSIGNMENT 2

MIT–MANIPAL
PHY 102
February 2014
1. Monochromatic light of wavelength 441 nm falls on a narrow slit of width 25.2 μm.
(a) Find the angular positions of 1ST and 2ND minima and their linear position on a screen
E423
2.16 m away. (b) Calculate the ratio of the intensity on the screen at a point 2.16 cm to the
E4211 intensity at the central maximum.
2. (a) Find the angular and the linear separation of two
points on the Moon’s surface that can just be
E4217 resolved by the telescope at Mount Palomar [diameter
SP425 of the objective is 5.08 m], assuming that this distance
is determined by diffraction effects. Assume a
wavelength of 565 nm and the EarthMoon distance is
3.84 x 108 m. (b) How far apart are the centres of
diffraction pattern in the focal plane (f = 35.3m) of the
lens?
3. Light of wavelength 440 nm passes through a double slit,
yielding the diffraction pattern of intensity I versus
P427 deflection angle θ shown in figure 42.27. Calculate
(a) the slit width and (b) the slit separation. (c) Verify
the displayed intensities of the m=1 and m=2 interference
fringes.
4.
E438
E4323
A diffraction grating (14.0 mm wide) has 200 rulings/mm
and a principal maximum is noted at θ=28.0°. (a) What
are the possible wavelengths of the incident visible light
(400700nm)? (b) What are the values (in °/nm) of the
dispersion of the grating in the vicinity of these lines?
(c) What are...
...Definition of 'Stakeholder'
A party that has an interest in an enterprise or project. The primary stakeholders in a typical corporation are its investors, employees, customers and suppliers. However, modern theory goes beyond this conventional notion to embrace additional stakeholders such as the community, government and trade associations.
Stakeholder may refer to:
Stakeholder (corporate), a person, group, organization, member or system who affects or can be affected by an organization's actions
Stakeholder (law), a third party who temporarily holds money or property while its owner is still being determined
Stockholder
A shareholder or stockholder is an individual or institution (including a corporation) that legally owns a share of stock in a public or private corporation.
Shareholder’s Wealth Maximization Versus Stakeholder Welfare as a Corporate Objective
Stakeholder’s welfare is a superior corporate goal over shareholder’s wealth maximization. Stakeholder’s welfare looks after all the factors responsible for its success whereas the wealth maximization as an objective overemphasizes the importance of money provider i.e. shareholders.
Shareholder’s wealth maximization is a wellaccepted corporate objective in almost whole the world barring a few exceptions. Indisputably, it is a superior and healthier goal compared to profit maximization which was lacking a long term perspective.
If we see, there is a simple math. The management is able to serve the...