Q54 For each of the following situations, would you recommend a sample or a census? Explain your reasoning in each case. [6 Marks]

(a) A purchasing agent has just received a shipment of shock-resistant watches and wants to find out approximately how far they can be dropped onto a concrete surface without breaking the crystal.

(b) General Mills wants to learn the age, gender, and income characteristics of persons who consume Cheerios breakfast cereal.

(c) The producers of NBC’s Tonight show want to find out what percentage of TV viewers recognize a photo of host Jay Leno.

(d) A small company wants to determine whether U.S. companies that manufacture nuclear submarines might be interested in a new technique for purifying air when such craft are submerged.

DO NOT WRITE THE ANSWERS - USE WORD FORMAT.

NO PLAGIARISM ACCEPTD IN THE ANSWERS

In this module, you will look for an article or news story/video that relates to one or more of the following topics:

Conservative versus non-conservative forces

Potential Energy

Conservation of energy (as it relates to physics, not environmental friendliness)

These are pretty broad topics, but a few ideas should spring readily to mind.

By the end of the third day of the module, create a thread with a 250-word post including one or more of the topics listed above, an active hyperlink to your resource, a summary of the resource itself, a summary of the material you are learning in this module as it relates to your resource, and an explanation of how the topic or resource ties to your everyday life.

Question is not related to a lecture. Just requires an article, explanation of the article, and how Conservative versus non-conservative forces, Potential Energy, or Conservation of energy (as it relates to physics, not environmental friendliness) apply to that article.

A summary of cash flows for Sentinel Travel Service for the year ended August 31, 2016, follows. The cash balance as of September 1, 2015, was $89,000.

Prepare a statement of cash flows for Sentinel Travel Service for the year ended August 31, 2016. Refer to the cash receipts and cash payments information given in the exercises and to the lists of Labels and Amount Descriptions for the exact wording of the answer choices for text entries. Be sure to complete the statement heading. A colon (:) and the word “Deduct” will automatically appear if they are required. Enter amounts that represent cash outflows as negative numbers using a minus sign.

Policy development processes lead to actual government action. In this activity, you will seek the policy development that should have gone on before a government's plan of action was drafted.

First, post a brief description of the business plan you and your partner have chosen. Outline the underlying public policy objectives you have identified.

Next, select one point from the policy that particularly interested you, confused you, or angered you. Formulate a question to begin a general discussion. (Note: ensure that your questions elicit an idea, not just a one-word answer. Rather than asking "Do you agree?", formulate a question such as "What do you think about the government's objective of...?"

1. Search the Internet for a provincial or federal government overall OR a department business plan.
2. Examine the plan for underlying public policy objectives. List and describe the objectives.

1. Which block cipher mode to use? For each of the following scenarios, determine which of the four block cipher modes discussed in class would be most appropriate. Justify your answer.

   1. Encryption of the social security number field within every record of a database.

   2. Encryption of a Word document (.doc) that will be sent as an email attachment.

   3. Sector-by-sector encryption of an external hard drive.

   4. Real-time encryption of a non-packetized bit stream (e.g. raw digital video).

   5. Suppose a communication system encrypts data using AES-128 and has the ability to update keys over the network; that is, when a node on the network needs to update its key, a network controller can send the node a new key encrypted with the current key. What block cipher mode would me most appropriate when encrypting the new key to send to the node?

Below are Global carbon dioxide concentrations and the measured change in Global temperature (Temperature Anomaly) for a period in our recent past:

Using StatCrunch, construct a scatterplot that shows the relationship between the two variables (carbon dioxide concentrations and the measured change in Global temperature). Calculate the r value using StatCrunch. Copy and Paste your work from StatCrunch into your Word document submission. Verbally describe the direction and magnitude of the relationship you find. What does this tell you about Global warming?

In the first decade of this century, the global economic environment has seen tremendous changes. On the local and international scales, the fact that ‘cultural environment’ is one of the most important factors affecting organizations raises the significance of the management of cultural differences. It is crucial for businesses to understand these differences and find ways to hurdle the barriers these differences present in a socially responsible manner.

TASK:

Select any organization of your choice operating in at least two countries. Carry out a research on the following aspects and present it in the form of a Report in Word.

1. For any two chosen countries in which it operates, assess the impact of economic and cultural forces on the management styles and business outcomes of the organization.
2. For any one country chosen above, examine how the ethical and socially responsible behavior is built in the management practices and business operations.

.

Note: Plagiarism is strictly prohibited please do not copy from internet

Purpose: To ensure that you can get StatCrunch up and running, download and open a data file, create graphical and numeric output, and transfer the output into Word.

1. Open the data file Soda.csv in Excel. The file contains survey responses from 339 adults. Variables are ‘Soda’ = the % of daily fluid intake due to soda, ‘Diet’ = whether or not the individual is on a diet, ‘Gender’ = the gender of the individual, and ‘Age’ = the age in years of the individual.

1. Which of the variables are categorical?

2. Which of the variables are numeric?

3. What are the scales of measurement of the variables?

2. Open the data file StocksTbills1960-2000.csv in StatCrunch. The file contains percent returns for stocks ‘stock’ and US Treasury bills ‘tbill’ for each year from 1960 to 2000.

1. Use StatCrunch to produce a dotplot of ‘tbill’ and paste it

                                                                  here

2. Use StatCrunch to calculate the sample mean of ‘tbill’ and paste the output

                                                                  here.

3. Submit the assignment by uploading this document.

Week 7 DQ4 (select 1 of remaining 3 DQs)

If you select this question, provide a thoughtful 250+ word response to all of the questions below (250 words total, not for each section). Also, remember to comment on some of these in order to meet the participation requirement for the week. Finally, please separate your answers by the parts of the question. It makes it easier to see your specific response to each part.

DQ4 – Comparing E--tailers

1. How do JCrew.com and Gap.com provide value to their customers beyond the physical products that they sell?

2. Why would a customer purchase online instead of going to the store?   What are some products that people “prefer” to purchase online and why?

3. Under what circumstances would the customer prefer a store-based experience? What are some products that people “prefer” to purchase in person and why?

1. A researcher is interested in whether college students get enough sleep. She suspects that they get less than 8 hours of sleep on average. The sample mean (x¯) for 65 students was 7.08 hours. The standard deviation of number of hours students slept is s=1.8.

(a) Determine the null and alternative hypothesis for the test. What is the parameter in this study?

(b) The p-value for the test is <0.0001. Using a significance level of .05, write a one or two sentence conclusion in context of the problem.

(c) Calculate 95% confidence interval for µ, the mean number of hours college students sleep per night. Interpret the confidence interval. Be sure to use the word mean or average in your interpretation and don’t forget units. If you are doing the calculations by hand use t∗ = 1.998.

(d) Does your confidence interval support the results of the hypothesis test? Explain.