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Explain why the number of cups of coffee drank in a day by a randomly selected student at UCLA is a random variable, Discrete Random Variables.

1.   Discrete Random Variables. Suppose that we are interested in the number of cups of coffee drank by a (randomly selected) student at UCLA. This quantity can be represented as a random variable Y with probability mass function:

         if a ∈ {0,1,2}

 if a = 3

if a = 4 ,  

if a = 5 0 otherwise

where c is an unknown constant.

(a)   Explain why the number of cups of coffee drank in a day by a randomly selected student at UCLA is a random variable.

(b)   What is the relevant outcome space of the random variable Y ?

(c)   Explain what the distribution of this random variable represents. In other words distribution of Y assigns a probability to any subset of the outcome space. How do we interpret this probability? (d) Solve for c. (Hint: Recall that PY (OY ) = 1 so that Pa∈OY pY (a) must equal one).

(e)   What is the probability that a randomly selected student at UCLA drinks at least 3 cups of coffee a day, PY (Y ≥ 3)?

(f)   What is the expected number of cups of coffee drank per day for a randomly selected student at UCLA?

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There are a number of themes central to the development of Douglass’s Narrative of the Life

Choose one of the questions below, and write a 550-word response.  Be sure to have a clear thesis that directly and succinctly answers the questions.  Provide a number of examples from the Narrative to support your claim.. Your response should be completed by the end of the day on Sunday, July 18.  (You should consider an early submission in order to have time for discussion and feedback before you take the midterm exam also due on Sunday).

1. There are a number of themes central to the development of Douglass’s Narrative of the Life.  Choose one from the shortlist below, and discuss various scenes and incidents from the Narrative that reflect or develop the theme.  

  • Ignorance Used as a Tool to Perpetuate Slavery
  • Knowledge as the Path to Freedom
  • The Impact of Slavery on Slave and Slaveholder
  • Slaveholding as a Perversion of Christianity and a Subversion of Democratic Ideals

2. Douglass defines freedom as more than an escape from slaveholders.  What is freedom according to Douglass, and how does he achieve it? Make sure to cite specific examples from the Narrative to support your claims. 

3. What does Douglass tell us about the ways in which slaves used culture as a buffer against the dehumanizing aspects of slavery?  [The way in which you define culture will be key to the development of your response].

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Holding the conference with the limited number of attendees would guarantee a loss of money as their expenses reached $27,450 and their attendees only contributed $6,950 leaving a loss of $20,500

Reply to material below with at least 250 words citation and reference

  1. The alternatives that are available to Anna and Ethan with regard to holding the conference are a). postpone the conference in hopes for more registries for the next event by researching why this one went south OR b). cancel the event all together OR c). holding the conference as is.
    1. Holding the conference with the limited number of attendees would guarantee a loss of money as their expenses reached $27,450 and their attendees only contributed $6,950 leaving a loss of $20,500.
    2. Canceling the conference means losing money as well since the cost of booking and cancellation fees and airline tickets include a maximum of $17,800.
    3. Rescheduling the event means a cash inflow of $109,600 subtracted by the operating expenses of $56,700 (hotel, planning, operating fees) leaving a profit of $52,900.
  2. The pros of holding the conferences as scheduled is getting some sort of satisfaction in knowing you might have a few loyal customers who would be happy that the event continued. The cons, however, are there will be lots of money lost and the conference would be very awkward with not many people showing up (potential tainted reputation).
  3. The pros of canceling the conference include the company saving money from not incurring costs by holding the conference. The company can focus their money, time, and energy on priorities within the company outside of the conference. The cons, however, include losing those “loyal” customers who were willing and ready to attend the conference.
  4. The pros of rescheduling the conference include holding a legitimate conference (after they go back and review what went wrong with the first one) which attracts many new customers and builds their company reputation and profit. Cons include the hotel company not letting you re-book as you cancelled the first time. Also, by rescheduling the event, the company must devote their time and energy towards a new event rather than devoting their time and money towards other affairs.
  5. As a short-term perspective, Flagstone should learn from this conference by understanding what went wrong the first time. Understanding why there were few registrations and how to make better marketing decisions in the future is key prior to rescheduling any event. Once Flagstone develops an idea of what went wrong, they can pin their eyes towards the future and long-term business decisions. Long term decisions should reflect on how to hold another event which does not repeat the same mistakes and does serve its purpose of attracting many customers. Flagstone needs to identify their weaknesses and build on their strengths in order for maximum success.

References:

Davis C. E., & Davis E. (2020). Managerial Accounting, Enhanced eText (4th ed.). John Wiley & Sons. ISBN-13: 9781119577669

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What was the mean number of U.S. states in which all of the beer brands were sold in 2008?

Review the SPSS output file that reports the results of the related samples t-test to compare the number of U.S. states where each brand was sold in 2008 with the number of U.S. states where those same brands were sold in 2012. For each brand, there is one value for the number of states in 2008 and another value for the number of states in 2012, making this a repeated measure. Answer the following questions based on your observations of the SPSS output file:

  1. What was the mean number of U.S. states in which all of the beer brands were sold in 2008?
  2. What was the mean number of U.S. states in which all of the beer brands were sold in 2012?
  3. Was there a significant difference in the number of states in which these beer brands were sold in 2008 versus 2012? Report the results of the t-test as follows: t(df value) = ___, and p-value.
  4. See all attachments. 

 Use the following information to ensure successful completion of the assignment:

  • Researchers wanted to explore self-esteem in adolescent boys and adolescent girls. Each respondent completed a 10-item self-esteem scale (they chose one rating for each item from a Likert-type scale, 1 = strongly disagree and 5 = strongly agree). The sum of the 10 ratings was each respondent’s self-esteem score. Their results were: t = 2.01, d = .90 (40 girls, 40 boys).
  • This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.
  • Use APA style for the writing assignments. The APA Style Guide is located in the Student Success Center.
  • This assignment requires that at least four additional scholarly research sources related to this topic, and at least one in-text citation from each source be included. 

Directions:

In an essay (500 words), use the scenario presented above to thoroughly answer the following questions:

  1. What statistical test did the researchers use to determine if there was a statistically significant difference in levels of self-esteem between the boys and the girls?
  2. What was the purpose of calculating a Cohen’s d? When is a Cohen’s d calculated? Interpret d=.90. What does it mean in this example?
  3. What if the researcher compared the adolescent boys before treatment and again after treating them for depression? What type of t-test would be most appropriate in this case, and why?
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A useful starting point is estimating the total number of relocating employees that can be supported in the host country

Instructions

For this homework assignment, you will develop a supporting human resource (HR) plan for an organizational strategy. In a paper of three to four pages (750-1000 words) of text, offer your ideas for a promising HR assignment, development plan, and sustainment plan to support the strategy of an organization expanding to open offices in sub-Sahara Africa. Drawing from appropriate sources, develop a scenario that provides the business of the organization, identify how much expansion is taking place, and identify the countries in which the expansion is taking place.

  • A useful starting point is estimating the total number of relocating employees that can be supported in the host country.
  • Will the organization need to establish a commissary (for grocery purchases), banking and currency exchange, and limited urgent-care stations?
  • Should the organization set assignment lengths of one year or two with families? What does research say is the optimal time period?
  • If there are families, what would be the children’s school arrangements?
  • How will the employees be housed?
  • Do they need an increased housing allowance, or does the organization need to procure its own compound of apartment housing?

Your homework assignment must be at least three pages in length. You are required to use at least one outside source to support your explanation. Your homework assignment response should be formatted in accordance with APA style.

2. What managers’ decisions have you seen as a course of action or program in health or safety that upheld the value of “human capital,” or people in the organization? Do you recommend a different course of action in hindsight?

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What is the atomic number for Carbon

Instructions: Using the periodic table, answer the following questions about elements. What is the atomic number for Carbon? 

What is the chemical symbol for Tungsten? 

What is the atomic number for Zirconium? 

What is the atomic number for mercury? 

What element has the symbol Ag? 

What element has the symbol Hf? 

What is the atomic number for Gallium? 

Atoms and Ions

Instructions: Answer the following questions regarding ions losing and gaining electrons. 

  1. How many electrons does chlorine need to gain to become an ion? Will it become a positively charged cation or a negatively charged anion? 
  2. How many electrons must nitrogen gain to become like its closest noble gas, Neon?
  3. What are valence electrons? 

Instructions: Answer the following questions about isotopes. 

  1. Given that the mass number for carbon is 13, how many protons and how many neutrons does the isotope contain? 
  2. Hydrogen has two naturally occurring isotopes: hydrogen-1 and hydrogen-2. What is the symbol for each of these hydrogen isotopes?
  3. How many neutrons are contained in nitrogen-15?
  4. How many protons does Cobalt-57 contain?  

Atomic Mass

Instructions: 

  1. Find the atomic mass unit of Sulfur-32 with a mass of 31.972 and percent abundance 94.99%, Sulfur-33 with a mass of 32.971 and percent abundance 0.75%, Sulfur-34 with a mass of 33.968 and percent abundance 4.25%, and Sulfur-36 with a mass of 35.967 and percent abundance 0.01%.
  2. Find the atomic mass unit of Silicon-28, Silicon-29, Silicon-30 with masses of 27.977, 28.976, 29.974, respectively. The percent abundance of the silicon isotopes is 92.2%, 4.7% and 3.1%, respectively.

Periodic Table and Its Trends

Instructions: Answer the following questions regarding the periodic table, the Bohr Model, and electron configuration.  

  1. Explain periodic table. 
  2. What is the Bohr Model? Provide a summary in your own words. 
  3. What is the electron configuration of Potassium?
  4. What is the electron configuration of oxygen? 
  5. How many valence electrons does Sulfur(S) have? 

Molecules and Compounds

Instructions: Find the mass ratios and atomic ratios of the following compounds. 

  1. CI2O7
  2. SbF5
  3. NH3
  4. BaI2
  5. S2Cl2
  6. OsO4

Instructions: Write the formula for each of the following ionic compounds. 

  1. Sodium chloride
  2. Zinc chloride
  3. Ammonium chloride
  4. Potassium hydroxide
  5. Calcium Nitrate

Instructions: Name the following ionic compounds. 

  1. MgCl2
  2. CaCl2
  3. CuSO4
  4. Al2O3

Instructions: Name the following molecular compounds. 

  1. Cl2O7
  2. PCI5
  3. SiI4
  4. NI3

Instructions: Write the formulas for the following molecular compounds. 

  1. Sulfur hexafluoride
  2. Sulfur dioxide
  3. Dinitrogen trioxide
  4. Carbon tetrachloride

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What is the number of 6 character passwords containing the word “cyber”

 What is the number of 6 character passwords containing the word “cyber”? (6 marks)

2. How many 6 character passwords are there which have at least 3 numbers? (6 marks)

3. Calculate the entropy of the following systems and order them according to increasing security (6 marks, 2 marks each)

(a) A 6 digit PIN code with exactly 5 different numbers

(b) A 6 digit PIN code with exactly 4 different numbers

(c) A 9 character password with lower- and upper-case letters and numbers, where all the numbers are at the end.

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Sexual Assault and The Silent majority,: Why does the number of sexual assaults continues to increase in the Army

eBLC 009-20

What`s the Silent Majority? Did women’s silence on “private” issues like abortion and sexual assault tank the GOP? Is Sexual harassment a manifestation of power relations ? The relationship between the sexes in many countries around the world includes a considerable amount of violence against women? Data about the United States and give details and quote examples.

 “ Sexual Assault and The Silent majority,: Why does the number of sexual assaults continues to increase in the Army?”.

eBLC 009-20

Sexual assault is, per Merriam-Webster dictionary, the illegal sexual contact that usually involves force upon a person without consent. This essay aims to find why the number of reported sexual assault cases continues to increase in the army. In 2006, in collaboration with the Department of Defense, the US Army initiated a program to fight against sexual Assault and Harassment SHARP.

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. Prescott Pharmaceuticals makes a number of generic versions of drugs. When Cymbalta (Duloxetine) lost its patent, Prescott invested $500,000 to obtain FDA approval and $100,000 to certify one of its production lines for its production.

Reflect on the assigned readings for Week 2 and then type a two page paper regarding what you thought was the most important concept(s), method(s), term(s), and/or any other thing that you felt was worthy of your understanding.  Define and describe what you thought was worthy of your understanding in half a page, and then explain why you felt it was important, how you will use it, and/or how important it is in managerial economics. After submitting your two page paper as an initial post in the “Reflection and Discussion Forum,” then type at least two peer replies in response to your classmates posts (200 word minimum each).

Assignment 2

Problem Set #2

1. Prescott Pharmaceuticals makes a number of generic versions of drugs. When Cymbalta (Duloxetine) lost its patent, Prescott invested $500,000 to obtain FDA approval and $100,000 to certify one of its production lines for its production. Production of the drug will cost $2,000,000. Marginal costs for the tablet are $0.10 and they sell for $0.40 per tablet. But many firms have entered and now make Duloxetine causing sales to fall off. Prescott anticipates that it could use this production line for other drugs losing patent protection shortly. If forecasted sales are 5 million tablets, what is the breakeven price? Should Prescott discontinue selling this product? 

2. When ShorTech introduced its Quadrant mobile phone, it had few competitors and so it set a price of $500 when its unit cost was $350. The economics consulting firm it hired to estimate the demand elasticity confirmed this was the optimal price. Since then, entry has occurred that make customers more price conscious. When it rehired the economics consulting firm to estimate the demand elasticity, it found that demand had become more elastic at -4. Also, it eked out cost savings and now has a unit cost of $300. What price should ShorTech charge now?

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Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS) by a number of organizations has impacted internal IT / IS departments.

The popularity and rapid adoption of Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS) by a number of organizations has impacted internal IT / IS departments. These services provide a virtualization infrastructure that covers data storage, networking, desktop computing, mobile computing, and so on.

Write a two to three (2-3) page paper in which you:

  1. Describe at least three items that an organization’s IT / IS department should consider when an organization’s strategy calls for the use of SaaS, PaaS, or IaaS.
  2. Evaluate the ways that SaaS, PaaS, and IaaS are used to reduce Total Cost of Ownership (TCO) and increase Return on Investment (ROI).
  3. Examine the impact to the IT support personnel when an organization embarks on the strategy stated in Question 1.
  4. Analyze three considerations that the organization’s management should be aware of.
  5. Examine three security issues that could arise from this type of an infrastructure.
  6. Use at least three quality resources in this assignment. Note: Wikipedia and similar websites do not qualify as quality resource

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