Suppose your work for the university of Michigan. The university wants to implement an email spam filter. So use the mbox.txt file that we used in class, build a filter system that filters emails into several categories of security levels: level 1 is the email from Uof M (@ umich.edu), level 2 is the email from other North American universities (@ xyz.edu), level 3 is the email from other educational institutions around the world (.uk, .za, etc.), and level 4 is the email from other email services (g m ail, etc). Please print out these 4 levels and also list all the senders (only those in the "From" lines) in each category. Example output: Level 1: zqian@ umich.edu Level 2: louis@ media.berkeley.edu ray@ media.berkeley.edu mmmy@ indiana.edu Level 3: antranig@ caret.cam.ac.uk david.horwitz@ uct.ac.za Level 4: gopal.ramasammycook@ g mail.com

Answer both questions

9.) (ch 6) Suppose that Danielle’s wage-schooling locus is given by

a) Derive the marginal rate of return (MRR) schedule. When will Danielle quit school if her discount rate is 10 percent?

b) Suppose the government imposes an income tax of 20% on both labor earnings and interest income. What is the impact ofthis income tax on Danielle’s educational attainment (will itincrease or decrease)? Explain your answer.

10.) (ch 6) Peter has just graduated from HS. He will live for three more periods, and he is considering three alternative education-work options. He can start working right away, earning $100,000 in period 1, $110,000 in period 2, and $90,000 in period 3. He can also go to college in period 1 spending $10,000 in that period, and then earn $150,000 in periods 2 and 3. Finally, he can go to college in period 1 and get an MBA in period 2. This last option will cost him nothing in year 2 (books and tuition are covered by a research assistant position). After getting his MBA, he will earn $300,000 in period 3.

a) If Peter’s discount rate is 0.20, which path will maximize his net present value of his lifetimeearnings?
b) Why is it realistic that his wage for option one decreases to $90,000 in year 3?

1. When an individual becomes infected with HIV, what symptoms will he or she exhibit?

2. How many types of HIV are known to be in existence?

3. How did HIV arrive in the human population?

4. Because infection with HIV does not result in elimination of the virus by the immune system, does this mean that the immune system does not respond?

5. What happens to T cells in an individual who is infected with HIV?

6. What is the difference between a primary immunodeficiency and a secondary immunodeficiency?

7. As of 1999, what are the statistics in terms of how many people are infected with HIV and mortality associated with the virus?

8. What is the recommended treatment today for AIDS?

9. Cite a couple of reasons why there is no effective vaccine for AIDS .

1.Which of the following scenarios would it be appropriate to use a normal approximation for the sampling distribution of the sample proportion?

Select one:

a.) A researcher wishes to find the probability that more than 60% of a sample of undergraduate students from UNC will be female. She samples the first 42 students that walk into the gym on Monday morning. The population proportion of undergraduate females at UNC is known to be 60.1%.

b.)A researcher wishes to find the probability that less than 5% of a sample of undergraduate students from Appalachian State University will be between the ages of 25 and 34. He randomly samples 50 undergraduate students from the student database. The proportion of undergraduates between the ages of 25 and 34 is 5.3%.

c.)A grad student at NC state wants to know how likely it is that a group of students would be made up of more than 27% graduate students. She will randomly select 38 students and ask them if they are a graduate student or an undergraduate student. The population proportion of grad students at NC state is 26.6%.

d.)A full-time student at Fayetteville State University wants to know how likely it is that a group of students would be made up of less than 70% full-time students. She will ask 30 people that she sees parking in the parking deck if they are full-time or part-time. The population of full-time students at Fayetteville State is known to be 72%.

2. In the general population in the US, identical twins occur at a rate of 30 per 1,000 live births. A survey records 10,000 births during Jan 2018 to Jan 2019 and found 400 twins in total. Which of the following are true?

Select one or more:

The proportion of twin births during Jan 2018 to Jan 2019 is .03.

The proportion of twin births during Jan 2018 to Jan 2019 is .04.

The probability of twin births among the general population is .03.

The probability of twin births among the general population is .04.

Pr(observing a sample proportion of twin births from a random sample of 10,000 live births <= 0.04) = 0.03.

Pr(observing a sample proportion of twin births from a random sample of 10,000 live births <= 0.04) = 0.5.

Pr(observing a sample proportion of twin births from a random sample of 10,000 live births <= 0.03) = 0.04.

Pr(observing a sample proportion of twin births from a random sample of 10,000 live births <= 0.03) = 0.5.

please,short answers

A. Majdi has a degree in accounting from BZU and works for a local accounting office. He was asked by a friend to prepare Financial statements for a small company in Ramallah. To help his friend Majdi prepared the financial statements and a report indicating that the financial statements were audited by him. What standards were violated and why? Is there a violation of the elements of audit quality control, briefly discuss?

b.Mira A Certified Public Auditor licensed in Palestine is the partner in charge of Ooredoo audit. In order to save cost, she hired a group of students from Al-Najah University to help her conduct the audit. A month later Mira received the audited financial statements and the report from the students. She signed it and send it to the board of directors of Ooredoo. What standards were violated and why? Is there a violation of the elements of audit quality control, briefly discuss?

A. Majdi has a degree in accounting from BZU and works for a local accounting office. He was asked by a friend to prepare Financial statements for a small company in Ramallah. To help his friend Majdi prepared the financial statements and a report indicating that the financial statements were audited by him. What standards were violated and why? Is there a violation of the elements of audit quality control, briefly discuss?

1. Mira A Certified Public Auditor licensed in Palestine is the partner in charge of Ooredoo audit. In order to save cost, she hired a group of students from Al-Najah University to help her conduct the audit. A month later Mira received the audited financial statements and the report from the students. She signed it and send it to the board of directors of Ooredoo.

What standards were violated and why?

Is there a violation of the elements of audit quality control, briefly discuss?

Discuss the pros and cons of a US based domestic company aggressively investing in emerging economies. You may use a particular company (by name) and a particular emerging economy (by name) to provide your examples. (International Management

Why is economic growth important to us and what are the most important/critical factors that contribute to growth?

What is holding the US economy back from achieving the desired 4% growth?