Please do these questions in the R language

1. Load the cars dataset into R. It is a built-in dataset.

2. Do an str() to determine the number of observations and variables. Enter your answer as a comment.

3. Plot speed on x axis and distance on y axis.

4. Find the correlation between speed and distance. What does the magnitude and sign indicate? Enter your answer as a comment.

5. Build a linear regression model with speed as the independent variable and distance as the dependent variable (all raised to first power).

6. Write the regression equation from question 5 as a comment.

7. Interpret the intercept and slope coefficients from question 6 in your own words as a comment.

8. What is the R square value of the regression model from question 5? What is the definition of R square value in the context of this question? Write your answer as a comment.

9. Are the coefficients significant at 0.001 level of significance for the regression model from question 5? How do you determine that? Enter your answer as a comment.

10. What is the distance value for a speed of 25 units using the regression equation from question 6? You can calculate it by hand. Enter your answer as a comment.

Health care providers and others must obtain written authorization from a patient prior to disclosure of health information for routine uses of treatment, payment, and health care operations.

A Patient Centered Medical Home (PCMH) is an approach to providing patient care that is facilitated through what TYPE of health care organization?

The MOST IMPORTANT purpose of HIE (Health Information Exchange) is for Health Organizations to:

The notion of Preventive Medicine which is still in use today was the foundation on which the concept of managed care was built on. Under this role the ‘gatekeeper’ or primary care provider was supposed to:

The difference between Medicare and Medicaid is that Medicare is made to help adults over 65 and Medicaid is made to help adults who are in financial difficulties and cannot afford health insurance.

In the midst of the Cold war, in the 1950s, a sleek aircraft known as the Avro Arrow was built to intercept Soviet bombers that might have entered North American air space over the North Pole. The Arrow was scrapped in 1959 and the planes were ordered to be destroyed. Nine model aircrafts were launched into Lake Ontario and were never recovered. In the summer of 2017, a mission to recover the nine models of the Avro Arrow was launched. It was a collaborative effort by several private companies in collaboration with the Canadian Coast Guard and the Royal Canadian Military Institute.

A Newfoundland company, Kraken Sonar Systems, was awarded the $500,000 contract which will involve deploying its state-of-the-art ThunderFish underwater vehicle and AquaPix sonar system to capture high-quality images of the lake bed.The high probability area that was to be searched included 64 square km. The Thunderfish and crew can map and analyse 1 square km at a time, doing 5 in a week. Assume each of the 9 model Avro Arrows would occupy it's own square km. Meaning, there cannot be two Arrows in the same square km.

What is the probability that, after the first week, the crew find at least one of the Avro Arrows? (Applying Counting Principles, Permutations and Combinations)

T/F

If you formed a portfolio that consisted of all stocks with betas less than 1.0, the portfolio would have a beta coefficient that is equal to the weighted average beta of the stocks in the portfolio.

The beta of an "average stock," or "the market," does not change over time.

The slope of the SML is determined by the value of beta.

The CAPM is built on historic conditions, although in most cases we use expected future data in applying it.

"Risk aversion" implies that investors require higher expected returns on riskier than on less risky securities.

If you plotted the returns of a company against those of the market and found that the slope of your line was negative, the CAPM would indicate that the required rate of return on the stock should be less than the risk-free rate for a well-diversified investor, assuming that the observed relationship is expected to continue in the future.

A firm can have a positive beta, even if the correlation between its returns and those of another firm is negative.

One stock has a beta of 1.2 and another has a beta of -0.6. The returns on the stock with the negative beta must have been negatively correlated with returns on most other stocks

A stock with a beta equal to -1.0 has zero systematic (or market) risk.

Accountant and the Business Owner 2

A young accountant straight out of school applies for a job advertised in the Sydney Morning Herald. He is interviewed by the owner of a small business who has built it up from scratch.

"I need someone with an accounting degree," says the man, "but mainly I'm looking for someone to do my worrying for me."

"How do you mean?" says the accountant.

"I have lots of things to worry about, but I want someone else to worry about money matters."

"OK," says the accountant. "How much are you offering?"

"You can start on seventy-five thousand," says the owner.

"Seventy-five thousand dollars. How can a business like this afford to pay so much?"

"That," says the man, "is your first worry."

After you have a good laugh (or perhaps a few chuckles), share with the group some information about yourself and your reactions to this story. Does this story portray the reality of the accountant's work? Does this joke portray a stereotype? If you agree with the substance of this story in terms of the accountant's role, is this attractive to you as a career? Please post a response, and respond to two other peoples' postings.

Linear Programming:
A real estate developer is planning a new mini apartment complex.

Three types of units can be built: one-bedroom apartments, two-bedroom apartments, and three-bedroom apartments.

Each one-bedroom apartment requires 700 square feet; each two-bedroom apartment requires 850 square feet; and each three-bedroom apartment requires 1,250 square feet.
The developer wants to keep a mix of apartment types in the complex. He believes that the number of one-bedroom apartments should be at least 15% of the total number of apartments. However three-bedroom apartments should not be more than 30% of the total number of apartments.

Local zoning laws do not allow the developer to build more than 42 units in this particular building location, and restrict the building to a maximum of 36,000 square feet.

Market studies show that one-bedrooms rent for $825 per month, two-bedrooms for $1,225 per month, and three-bedrooms for $1,775 per month.


a)Determine the constraint for square feet.

b)Determine the constraint for the number of total units.

c) Determine the constraint for one-bedroom apartments.​​​​​​​

d) Determine the objective function.

Let us say that the SBRU information system includes four subsystems: Resort relations, Student booking, Accounting and finance, and Social networking. The first three are purely Web applications, so access to those will be through an Internet connection to a Web server at the SBRU home office. The Social networking subsystem has built-in chat capabilities. It relies on Internet access for the students, as students compare notes before they book their travel reservations and as they chat while traveling. To function properly, the system obviously requires a wireless network at each resort during the trip. SBRU isn’t responsible for installing or maintaining the resort wireless network; they only plan to provide some design specifications and guidelines to each resort. The resort will be responsible for connecting to the Internet and for providing a secure wireless environment for the students.

1. Design the environment for the SBRU information system by drawing a network diagram. Include what might be necessary to support online chatting capabilities.

2. Considering that everything is designed to operate through the Internet with browsers or smart phones, how simple does this architecture appear to be? Can you see why Web and smart phone applications are so appealing?

3. What aspect of design becomes extremely important to protect the integrity of the system?

Using SHA 256 in Cryptool find the hash values (hash digests) for the following messages: (Show your work by capturing screen images)

1. Character 0 (note the word Character is not included)
2. Character 1 (note the word Character is not included)
3. Fort Valley State University is where talented students come simply for the opportunity to be brilliant. Located in the heart of Georgia, FVSU combines the personal attention and family feel of a small, private college with the resources and research found at large public universities. Located on the second largest acreage of any Georgia university, it is the only university in the world which at once is a University System of Georgia institution, a historically black university, and an 1890 land-grant institution, with a directive to use knowledge to improve the lives of students and non-students alike. Leveraging the reputation for excellence FVSU has built since 1895, the university is preparing students to embrace their genius as future global leaders and enabling discovery which will make real that only now imagined.
   That’s why our motto and tagline is “empower the possible.
4. Change the message in 3 by 1 bit and find the hash of it. You need to explain how you change the message by a single bit

Roadkill on China’s New Route to Progress A pile of rusty pipes and other construction materials are all that remain of Lanzhou New Area’s tram project in Gansu province. The tracks have been paved over, their mismatched lines scarring a six-lane road that ends at the edge of the planned city in central China. “The project is dead,” says a guard, who gives only his surname, Le. President Xi Jinping’s clampdown on debt had claimed another victim. In much of China the economy has powered through Beijing-mandated restrictions on borrowing by local governments and state-owned companies. Analysts surveyed by Bloomberg reckon growth accelerated to 6.8 percent last year, even though fixed investment was probably the weakest since 1999. But for China’s hinterlands—the less developed areas far from the more prosperous industrial centers along the coast—the story is different. Lanzhou New Area, a zone the size of New York City in the provincial capital of Lanzhou, was once a poster child for the spending boom that China’s central and local governments orchestrated to counteract the global financial crisis. After Beijing approved the development in 2012, armies of earth movers rolled in, flattening hills, filling valleys, and digging lakes in service of luring 1 million residents to the zone by 2030. The site achieved internet notoriety in 2016 for its theme-park reproductions of the Parthenon and the Great Sphinx. Now, Xi wants to neutralize the risk that soaring debt will cause a financial crisis and derail growth. The issue was front and center at October’s Communist Party Congress and December’s Central Economic Work Conference, where elite cadres set goals for 2018. Policymakers have introduced measures to restrict loans to real estate developers, local governments, and industries plagued by overcapacity. In Gansu, fixed investment shrank 39 percent in the first 11 months of last year, the most in any province, according to official statistics. “Deleveraging is always painful, but it will be more painful for inland provinces where growth is not as robust,” says Qian Wan, a Bloomberg economist in Beijing who analyzes China’s regional economies. While Lanzhou has a population of 3.7 million, data from the municipal statistics bureau show that fewer than 150,000 live in the New Area, an hour’s drive north of the city center. Work on projects such as the tram and a network of underground tunnels for water pipes and power lines came to a halt when the Bank of Gansu Co. refused last year to renew a 2 billion-yuan ($311 million) line of credit to the corporation overseeing development of the satellite city. More than 200 other projects across Gansu province are at a standstill. Local Communist Party officials denied Bloomberg’s requests for interviews with officials in the area. In a statement to Bloomberg, Bank of Gansu said it’s raised standards for creditors to mitigate risk and reduce financial leverage. Don’t write Lanzhou—or its New Area—off yet. The city, which sits on the banks of the Yellow River near China’s geographical center, was once a major stop on the Silk Road. As such, it stands to benefit from Xi’s One Belt, One Road initiative—a $1 trillion effort to revive and expand those ancient trade routes. It’s worth noting that while Bank of Gansu restricted credit to the local government investment arm, it continued to fund projects related to technological innovation, science, and cultural tourism. If the government can manage the shift in investment in Lanzhou without unleashing the excesses of the past decade, the city may eventually fill its empty tower blocks and once again become a bridgehead for China’s western development.

Briefly discuss the following two questions:

a. What are the key factors affecting the completion of the project?
b. What are your suggestions to the management team as to how to execute the project effectively and efficiently?

Questions using the financial statements below:

What is the Net Income Margin? State your answer as a % and round to the nearest whole number

What is the current ratio? Remember that a ratio is stated in reference to 1 (not as a percentage), and you should carry ratio out to two decimal places

What is the exact amount that account receivables increased during the year?

What is the total Cost of Sales for the year?

What month does the fiscal year begin in?

What is the quick ratio? Remember that a ratio is stated in reference to 1 (not as a percentage), and you should carry ratio out to two decimal places.

What two revenue line items make up more than 80% of the company’s revenue for the year? Hint: Write answers exactly like they are on the financial statements, capitalization and spaces included. Place a comma and space ", " in between your two answers.

How much did Park Systems invest in radio facilities?

What is EBITDA (Net Income before Interest Expense, Taxes, Depreciation and Amortization are deducted)?

How much did the company pay down its Note Payable?

Balance Sheet

Years Ended December 31 (in thousands)

Assets

Current Assets

Income Statement Years Ended December 31

(in thousands)

Statement of Cash Flows Year Ended December 31 (in thousands)

Operating Activities

Investing Activities