Questions
A person selects a random sample of 15 credit cards and determines the annual interest rate,...

A person selects a random sample of 15 credit cards and determines the annual interest rate, in percent, of each. The sample mean is 12.42% and the sample standard deviation is 1.3%. Assume that the rates are approximately normally distributed.

a) Construct and interpret a 99% confidence interval for the population mean credit card annual interest rate. To show work, write out the following:

-The given numbers with their corresponding variables.
-The formula that's used to calculate the confidence interval. Also give a short explanation stating why you chose the formula that you did.
-The built in calculator program that you used to compute your answer.

b) Interpret the confidence interval from (a). Include the following:
-The confidence level.
-The population parameter of interest (in the context of the problem).

-The lower and upper bounds of the C.I., along with the units.

c) Suppose that someone claimed that the population mean credit card annual interest rate is at least 14%. Based on your confidence interval in (a), is it reasonable to believe that the population mean credit card annual interest rate is at least 14%? Explain why or why not using a complete sentence.

In: Statistics and Probability

Toy World Ltd operates a chain of toy shops. The chief accountant has come to you...


Toy World Ltd operates a chain of toy shops. The chief accountant has come to you for advice about two financial reporting issues that have been raised at a meeting of the board of directors. Your advice should be justified by reference to Framework 2014
(a) The board of directors has decided to restructure its operations in Queensland. This decision has been announced to the Australian Securities Exchange. As a result of the restructuring, some employees will be made redundant and some leases will be terminated as will some other contracts entered into by the in Queensland. The chief accountant is proposing the following journal entry:

Restructuring expense Dr
Liability for restructuring Cr


(b) The company has placed an order with a toy manufacturer in China. The amount of the order is $750000. The toys are to be built to Australian specification standards by the manufacturer in China. The company has paid a deposit of $75000. which will be forfeited in the event of cancellation. The board of directors says there is no intention of cancelling the contract. The chief accountant is proposing the following journal entry:

Inventory of toys Dr
Cash at bank Cr
Accounts payable Cr

In: Accounting

From Barbie dolls to runway models, women in Western countries are exposed to unrealistically thin and...

From Barbie dolls to runway models, women in Western countries are exposed to unrealistically thin and arguably unhealthy body standards for their gender. A body mass index (BMI) between 18.5 and 24.9 is considered healthy. Using a 3D computer avatar, participants built what they considered the ideal body of an adult of their own gender. Below appears a summary of the results for a sample of 40 female heterosexual Caucasian undergraduate students from British universities that had been recruited by the researchers. Mean BMI was recorded to be 18.85 with standard deviation 1.75. Does the data provide evidence that young Caucasian women in British Universities, on average, aim for an unhealthy ideal body type (corresponding to a BMI less than 18.5)? Use α = 0.10.

(a) Construct a 99% confidence interval for the mean BMI for young Caucasian women in British universities using R. Use at least 2 decimals in your answer. [2 marks]

(b) Would a 99% CI (for the mean BMI) constructed using a smaller sample than the one used for part a) tend to be wider or narrower? Explain. [2 marks]

In: Statistics and Probability

Hector Diaz (Maria's cousin) has come up with a brillant way to use parts left over...

Hector Diaz (Maria's cousin) has come up with a brillant way to use parts left over from last year's unsuccessful Spiderman Banana Bike to build a new GBI product - the Spiderman Unicycle - which will have part number UNI1001. Hector has built the necessary material master for UNI1001 in SAP and has created and entered the BOM. He has documented an assembly plan for the new product that indicates how existing work centers will be used for the new product. Maria spent two days on the phone calling all retailers and now has 100 confirmed orders. She has entered the orders in SAP. All of the parts necessary to build these 100 are already in inventory. List the SAP steps to complete the master data and build the bikes to satisfy these orders. For each step, include the module and the data needed. Number your steps. You do not need to include steps for fulfilling the orders (so no SD steps) or settling the production costs (so no CO steps).

Format for answer:

Step # Module Process Step Data needed

In: Operations Management

Assignment 2: Create a form that collects 5 different pieces of data. Once the user clicks...

Assignment 2:

  • Create a form that collects 5 different pieces of data.
  • Once the user clicks the submit button, the processing PHP file displays the data that was entered thru the form, performs a calculation, and displays the result.
    To receive full credit, students need to implement the following:
  1. Create variables with valid names and assign values to them
  2. Use literals and concatenate strings
  3. Use $_POST
  4. Use echo statements to display data on a page
  5. Code string and numeric expressions
  6. Use built-in function number_format(). (See provided example where the average displays only 2 decimals)
  7. Use the main.css file or create your own

Note: To receive credit, the files need to work as expected and be error free.

This is just an example to give you an idea of what Assignment 2 is supposed to do. You can use this example if you wish for your assignment:

  • The form collects first name, last name, score1, score2, score3.
  • The PHP file calculates the average of the 3 scores and displays the first name, last name and the average.

In: Computer Science

CRM Technologies Build Versus Buy Analysis and Program Management You work for a large Boston based...

CRM Technologies Build Versus Buy Analysis and Program Management

You work for a large Boston based investment firm.  They are currently using an older CRM (Client Relationship Management) system.  It was home grown/built in house 10 years ago and has served them well but like all old systems, newer technologies have come along that are slicker, more integrated and higher functioning in general.

Your boss has come to you and asked you to begin the process of researching solutions.  You could

  1. Build a new one – probably from scratch to use newer technologies
  2. Analyze commercial purchase-able cloud based solutions

Your task is to create a framework to evaluate all/any short term and longer term costs associated with software ownership.  Build versus buy.

Creativity and original ideas and concepts are encouraged.  Use google, use lecture material and use your intuition.  The delivery is a framework that identifies what you have to analyze.  The resulting work will be presented to the class as a team.

In: Accounting

in python You're always in a hurry and worried about missing your classes. However, you are...

in python
You're always in a hurry and worried about missing your classes. However, you are afraid to get speed tickets in case you exceed the speed limit on the road if you leave late from home or work.
Therefore, you need to drive at the maximum speed allowed and make sure to reach your class on time.
For this purpose, you need to write a program that will read from the user the maximum speed
limit (assume it is the same across all roads) and the distance to be traveled (in KM) and then
print the time (in hours and minutes) at which they will have to leave home or work. You may
also assume that you'll maintain a constant speed till you arrive.
You may use any built-in function that can help you with that.
Example:
If the maximum speed limit is 80 km/hr and you're 20 km far from the university and your class starts at 2:00 pm then you need to leave your work or home at maximum at 01:45 pm since it takes you 15 minutes to arrive.

In: Computer Science

In class, you have seen how to calculate the maximum speed for a car to go...

In class, you have seen how to calculate the maximum speed for a car to go around a flat curve (with friction), and for a banked curve (without friction). Here, you will consider the general case. (For each question part below, include a free-body diagram.) a) (3 points) Explain briefly why the car can go around the banked curve safely even without friction, and why that is not the case for the flat curve. b) (5 points) Now consider a curve that is banked so that a car can safely take it at a speed of 85 km/h, even if there were no friction. Assuming the radius of the curve is 68 m, calculate the angle at which it has been built. c) (6 points) For the banked curve, calculate the maximum speed that a car can have to safely go through it if the coefficient of static friction is 0.3. What will happen if the car is faster? d) (6 points) For the same curve, calculate the minimum speed the car must have to safely make it through. What will happen if the car is slower?

In: Physics

Layla's Distribution Co. is considering a project which will require the purchase of $1.6 million in...

Layla's Distribution Co. is considering a project which will require the purchase of $1.6 million in new equipment. The equipment will be depreciated straight-line to a zero book value over the 5-year life of the project. Layla's expects to sell the equipment at the end of the project for $180,000. Annual sales from this project are estimated at $1.3 million, and you will incur $100,000 in fixed costs and variable costs equal to 10% of sales. Net working capital equal to 30 percent of sales will be required to support the project and built up in the beginning. All of the net working capital will be recouped at the end of the project. The firm desires a minimal 12 percent rate of return on this project. The tax rate is 30 percent.

1. What is the value of the depreciation tax shield in year 3 of the project? (Answer is 96000?)

2. What is the amount of the net (after-tax) salvage value of the equipment? (Answer is 126,000?)

3. What is the recovery amount attributable to net working capital at the end of the project?

4. What is the operating cash flow each year?

5. What is the IRR of this project?

In: Finance

The centered average of a list of numbers is the arithmetic mean of all the numbers...

The centered average of a list of numbers is the arithmetic mean of all the numbers in the list, except for the smallest and largest values. If the list has multiple copies of the smallest or largest values, only one copy is ignored when calculating the mean. For example, given the list [1, 1, 5, 3 5, 10, 8, 7], one 1 and 10 are ignored, and the centered average is the mean of the remaining values; that is, 5.2. Use the function design recipe to develop a function named centered_average. The function takes a list of integers. (Assume that the list has at least three integers). The function returns the centered average of the list. Hint: In this exercise you are permitted and encouraged to use Python's min and max functions.

**** YOU CANNOT USE THE FOLLOWING:

list slicing (e.g., lst[i : j] or (lst[i : j] = t)  the del statement (e.g., del lst[0])  Python's built-in reversed and sorted functions.  any of the Python methods that provide list operations; e.g., append, clear , copy , count, extend, index, insert, pop, remove, reverse and sort  list comprehensions

In: Computer Science