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What estimator and statistical test should you use to test if survival curves of two groups are significantly different from each other? How many dummy variables you would need to include in the regression analysis to represent a variable with k categories?

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Easy stats questions

1.What is VIF test used for?

2.When should we use a Poisson regression?

3.When should we use mixed-effects model?

4.What estimator and statistical test should you use to test if survival curves of two groups are significantly different from each other?

5.Explain what an interaction is.

6.Explain why a test with 100% specificity might not be a perfect test (or might not even be a good test).

7.Give an example of interval-censored observation in survival analysis.

8.How many dummy variables you would need to include in the regression analysis to represent a variable with k categories?

2-3 sentences for each. do NOT use outside sources

Who is the friend? What interactions do we see in the play, and what inferences can you make about the friendship? How does Shakespeare show us the relationship?

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Thematic Analysis paper

To focus your thinking, choose one character – either Brutus or Antony – who will be the subject of your paper. Then, consider their loyalties. Your three body paragraphs should focus on three separate friendships your chosen character has in the play. For each, include the following points:

  • Who is the friend?
  • What interactions do we see in the play, and what inferences can you make about the friendship? How does Shakespeare show us the relationship?
  • Does your character remain loyal to this friend? If so, what reasons do they have to remain loyal?
  • Or does your character betray this friend? If so, how do they feel about this betrayal?

At least one of your body paragraphs should focus on your character’s friendship with Caesar.

Your conclusion paragraph should come to a meaningful insight about whether your character was a good friend and what Shakespeare wanted to communicate, thematically, about loyalty, betrayal, and friendship in Julius Caesar.

What to Write for the Essay.

  • Introduction
    • The character you chose to focus on (Brutus or Antony)
    • The three friendships you will examine (remember one of them must be with Julius Caesar)
    • The quality of friendships this character had overall
  • Body Paragraph #1: Friend 1
    • A description of friendship #1
    • Identify and discuss interactions and inferences in the play about loyalty or betrayal with this friend.
    • Use at least two quotes to support your ideas.
  • Body Paragraph #2: Friend 2
    • A description of friendship #2
    • Identify and discuss interactions and inferences in the play about loyalty or betrayal with this friend.
    • Use at least two quotes to support your ideas.
  • Body Paragraph #3: Friend 3
    • A description of the friendship with Julius Caesar
    • Identify and discuss interactions and inferences in the play about loyalty or betrayal with this friend.
    • Use at least two quotes to support your ideas.
  • Conclusion
    • Discuss the quality of your character’s friendships
    • Discuss what Shakespeare wanted to communicate, thematically, about loyalty, betrayal, and friendship in Julius Caesar.

Shakespeare uses an incredible amount of poetic devices in Julius Caesar. While your focus should be on the characters and the theme of this play, including a discussion of these will help create a strong paper.

With the selected scenario in mind, create an ERD Diagram showing the tables and fields needed. Be sure to identify and keys or constraints. Write a brief prompt discussing the design considerations of your database solution.

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Creating a database solution for a local library.

You have been tasked with creating a database solution for a local library. This database will be used to keep information about the books owned by the library and which books are checked out by customers. You are given the following information:

    • The database will need to store information about books, authors, and customers.
    • Books can have multiple authors. Authors can write multiple books. Customers can check out any number of books they wish.
    • Book information includes title, author, year of release, number of pages, genre, location (in library, checked out).
    • Author information includes name.
    • Customer information includes name, age, phone number, join date, books checked out.

Instructions:

  • With the selected scenario in mind, create an ERD Diagram showing the tables and fields needed. Be sure to identify and keys or constraints. (40 points)
  • Write a brief prompt discussing the design considerations of your database solution. (40 points)
  • Write SQL statements that will produce the tables and columns identified in your ERD Diagram. (40 points)
  • Write SQL statements that will populate at least 5 records in each of your tables. (20 points)
  • Write SQL statements to perform the following (Assume the records and counts your return should be unique. (Feel free to use more keywords/functions than those listed):
    • Produce a list of fields using SELECT and WHERE statements. (2 points)
    • Produce a list of fields using SELECT and ORDER BY statements. (2 points)
    • Produce a list of fields using SELECT and GROUP BY statements. (2 points)
    • Craft a query that returns a count and a customer/player name (10 points)
    • Modify values in the age field to increment by 1. (10 points)
    • Add a column to your database. Remove the column from your database. (2 points)
    • Delete rows in your database using a WHERE statement. (2 points)
    • Delete a table. (10 points)

Include SQL statements you used as well as returned results of statements. Submit your final exam as a Word or PDF document.

Describe how the messages will be communicated to the internal audience. Be specific. Using your knowledge of internal communication channels, apply at least seven internal communication channels in this context. Be creative.

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Internal Communication Plan written report format

A manufacturing company is facing challenges in effectively communicating with its employees. The company has grown rapidly in recent years and has a diverse workforce of 6,500 people in 7 branches spread across multiple locations. As a result, there are communication gaps and misunderstandings among employees, which have led to lower morale and productivity. Additionally, the company is planning to implement a major change, such as transitioning to a more automated manufacturing process, and is concerned about how this will be received by employees.
The company recognizes the importance of clear and consistent communication to maintain a positive and productive work environment and is seeking to develop an internal communication plan to address these issues. As the Internal Communications Director for this company, you have been asked to create an Internal Communication Plan.

The Internal Communication Plan will include steps to ensure that all employees are informed and updated on the changes and that their concerns and questions are addressed. The company also aims to improve communication among employees across different locations and to create a culture of open communication and feedback.

PART 1: INTERNAL COMMUNICATION PLAN (75%)
The Internal Communication Plan should be written in report format and include enough details and specifics that the internal communication team of the organization could directly implement the plan if they choose to. Provide references (APA style) wherever applicable and if you cite information that is not common knowledge.

Be as specific as possible when addressing each of the following points: 1. (10 marks)

1a. Brief introduction of the organization including its history, structure, culture, etc. Here, describe the situation that calls for the internal communication plan, including the SWOT analysis of the organization if applicable. (8 marks)
1b. Also, what are the internal communication issues/problems? (2 marks )

2. (20 marks)
2a. IC Plan objectives: Propose at least three goals/objectives for the internal communication program. (6 marks)

2b. What are the expected outputs, outtakes, and outcomes? (9 marks )

2c. Audience Analysis (Who are the target audience for the internal communication program? How is the audience segmented? (5 marks )

3. (15 marks)
3a. Strategic role (Identify the strategy or strategies for the communication plan. (5 marks).
3b. What are the overall concepts, approaches, or general plans to achieve the goal(s) and objectives? (10 marks)

4. (15 marks)
4a. Key Messages: (Create three key messages for this communication campaign, What do you want the employees to know, remember, think about, or do? (3 marks)
4b. Tactics/Channels: Describe how the messages will be communicated to the internal audience. Be specific. Using your knowledge of internal communication channels, apply at least seven internal communication channels in this context. Be creative. (12 marks )

5. (15 marks)
5. Evaluation: Discuss how the internal communication efforts will be evaluated (7.5 marks) and what will be evaluated. (7.5 marks)

SUBMISSION: One pdf of the Internal Communication Plan to be submitted on BBL.

Explain the philosophy of edgar alan poe. Include references in your text It should be brief but detailed enough.

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Discussion

Explain the philosophy of edgar alan poe. Include references in your text It should be brief but detailed enough.

Describe the findings of your scatterplots in 2-3 paragraphs. Define discrete and continuous variables, then categorize each variable in this assignment as one or the other. Explain the relationship between education, IQ and wages.

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Economics of Education PS 5

Write the name of all group members, and your responses on a single document to submit.

Estimating the Returns to Schooling
For this section we will analyze data describing individual earnings, their education and experience profile, and other characteristics. We will dive into the economic relationship between education and wages in this example.

Q1a. Load wagedata.csv in your workstation and name the data frame wages main.
The variable wage represents monthly wages. We want to convert this value into 2020 dollar values. First create a variable CPI and set it equal to 0.4. Then, create a new variable wages main$wage2020 by dividing the wage by the CPI. Use the describe function and report the summary statistics for monthly wages in 2020 dollars. Include the mean, standard deviation, median, max, min, Q1 and Q3.

Q1b. Let’s create an hourly wage variable. The current variable hours is average hours worked per week. Create a variable annualhours equal to weekly hours multiplied by 52. Also, create a varaiable annualwages, noting that the current 2020 wage measure is in months. Next, create a variable hourlywages. Use the describe function and report the summary statistics for hourly wages. Note any cause for concern you may have with the data.

Q1c. The education variable educ reports the highest level of education attainment for each person in the sample. Count the number of people in the sample with each education level. Describe what you see in 2-3 sentences. Overall, does the data align with what you would expect?

Q1d. Produce five scatter plots and paste them here. Note that tenure is defined as years in the current job, and experience is defined as overall years of work experience.
• Education vs. IQ (IQ on x-axis)
• Hourly Wages vs. IQ (IQ on x-axis)
• Hourly wages vs education (education on x-axis)
• Hourly wages vs tenure (tenure on x-axis)
• Hourly wages vs experience (experience on x-axis)

Q1e. Describe the findings of your scatterplots in 2-3 paragraphs. Define discrete and continuous variables, then categorize each variable in this assignment as one or the other. Explain the relationship between education, IQ and wages. Then describe the what you find in terms of tenure, experience and wages. Any surprises on this visual inspection of the data?

Q1f. First create three new variables: Log(HourlyWage), exper2, and tenure2. Then, use linear regression to estimate the returns to education, also known as the Mincer equation. Log(HourlyW agei) = β0 + β1Educi + εi.

Describe the estimate you get for bβ1. Based on your results, how much does the model predict your hourly wage to rise for one additional year of schooling completed? What makes this estimate difficult to interpret?

 

Q1g. Next estimate
Log(HourlyW agei) = β0 + β1Educi + βexperiencei + β3experience2 i + εi. Report the coefficient for bβ1. How did it change and why?

 

Q1h. Substitute the tenure variables for the experience variables in 2f and run the regression again. Do your results for bβ1 change much?

Why would evolution have enabled blind mole rats to synchronize their suprachiasmatic nucleus (SCN) activity to light, even though they cannot see well enough to make use of the light?

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Discussion 4

Respond to the following in a minimum of 200 words:

  • Why would evolution have enabled blind mole rats to synchronize their suprachiasmatic nucleus (SCN) activity to light, even though they cannot see well enough to make use of the light?
  • Describe the stages of sleep. During which part of a night’s sleep is REM most common?
  • Unlike adults, infants alternate between short waking periods and short naps. What can we infer about their neurotransmitters?
  • According to the neurocognitive hypothesis, why do we have visual imagery?

What type of statistical procedure is this? Describe the findings, including interpretation of all values in the column for parameter estimates and whether or not they are significant.

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5 questions

1. A study looked at whether pack years of lifetime smoking (smokepy) can predict the level of C-reactive protein (CRP), an inflammatory marker, after controlling for age, socioeconomic status (SES) and education. SES and education were numerical variables; CRP was normally distributed. The results of analyses are shown below.
Significance criterion is set at p<0.05.

R-squared = .43
Adjusted R-squared = .41

Parameter Estimates
Variable DF Estimates Standard
Error
t value p-value
Intercept 1 169.39 7.92 21.39 <.001
Smokepy 1 -0.38 0.05 -7.49 <.001
Age 1 0.03 0.04 0.77 .44
SES 1 1.41 0.67 2.1 .04
Education 1 -1.66 0.87 -1.91 .06

A) What type of statistical procedure is this?
B) Describe the findings, including interpretation of all values in the column for parameter estimates and whether or not they are significant.
C) After controlling for model complexity (i.e. number of independent variables), what is the proportion of variability in CRP explained by this model?

2. An investigator conducted a study to find the relationship between the number of decayed, missing, or filled teeth (DMFT) and sugar consumption. The investigator produced an estimate for the correlation coefficient and provided the following statement: “The correlation between DMFT and sugar consumption is 0.7. There is a strong correlation between DMFT and sugar consumption. Therefore, it is recommended that patients be advised to reduce sugar consumption to prevent tooth decay.”
State why you are or you are not confident about this investigator’s conclusion. In other words, explain if something is missing from this investigator’s analysis, or if all you need is provided.

3. You are conducting a study to analyze gender differences in neurocognitive impairment (NCI) within a sample of cocaine-dependent methadone-maintained patients. You found 3 demographic characteristics that produced significant effects on NCI. They are gender, race, and age.

A) What statistical analysis would you use to see simultaneously the contributions of socio-demographic variables (gender (male/female), race (White, Black, Latino, Asian), and age (in years) on self-reported NCI, a normal continuous outcome (higher scores indicate higher NCI)?
B) How many independent variables will there be in your model? Describe (1) what they are, (2) how you would create them, and (3) interpretation for each coefficient.

4. We ran an inference test to study if gender (0=female; 1= male) is associated with a diagnosis of Type 2 Diabetes Mellitus (t2dm: 0= absent; 1=present) on a group of patients, controlling for age. Results table are shown as below:
Analysis of Maximum Likelihood Estimates
Estimate Standard
Error
Test statistic p-value Exp(B)
Intercept -12.77 1.9759 41.8176 <.0001 ———-
Gender 0.41 0.124 10.9799 0.0009 1.5
Age 0.0948 0.0305 9.6883 0.0019 1.09

A) What type of model is this, and why is this type of analysis appropriate in this case?
B) Describe the finding: is gender associated with diagnosis of t2dm, why or why not (provide the test statistic and p-value)? Interpret the coefficient for gender and age.

5. In 1998, there was a major ice storm in Maine. Researchers wanted to know whether there was an association between generator location (inside or outside) and CO poisoning after an ice storm. Results from their case-control study are summarized in the table below (cases are observations that have experienced the CO poisoning, controls are observations that have not experienced the CO poisoning):

(A) What type of table is this?
(B) Name at least 2 tests you can perform to investigate the association between generator location and CO poisoning after an ice storm.
(C) Calculate the odds ratio and risk ratio based on this table. Which one is more appropriate for this type of study design?

What information is needed for the report? 6. Is there anything particularly helpful and/or harmful about the manner in which your state deals with reporting elder abuse and/or abuse against a person with disabilities?

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Discussion post

Discussion one: Domestic Violence Class
• RAINN (Under Search type in “State Law Database” then choose your state. Click on “Mandatory Reporting: The Elderly”)
• National Domestic Violence Hotline
• National Committee for the Prevention of Elder Abuse

Choose a state that you are interested in and respond to all of the following questions and at least 2 of your classmates’ posts.

Name of state:
1. Who are the mandated reporters?
2. Who is exempt from reporting (if applicable)?
3. What is the definition of an “adult”?
4. What are the penalties for failing to report?
5. What information is needed for the report?
6. Is there anything particularly helpful and/or harmful about the manner in which your state deals with reporting elder abuse and/or abuse against a person with disabilities?

Discussion 2:
Present the advantages and limitations of Rational Emotive Therapy; in which situations do you feel it would be useful? Provide a few examples and some of the techniques you might utilize to reach your treatment goals?

What is a learning organization? Discuss why is this approach to strategic management better than the more traditional top-down approach in which strategic planning is primarily done by top management.

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Learning organization

What is a learning organization? Discuss why is this approach to strategic management better than the more traditional top-down approach in which strategic planning is primarily done by top management. 3 marks (max 350 words)

Give an example of a learning organization from the SAUDI market. Describe the mission statement and vision of this organization. In which way this organization is considered a learning organization? Is it successful? What are the main problems faced by this organization to implement this approach? Justify. 5 marks (max 350 words)

Question 2. (7 marks)

Refer to Porter’s forces driving industry competition to answer the following questions: (max 500 words)

  • In your opinion, what is/are the most important force(s) in Porter’s industry forces? Why? 1 mark
  • What determines the level of competitive intensity in an industry? 1 mark
  • How can a decision maker identify strategic factors in a corporation’s external international environment? 1 mark
  • What are the main limits and drawbacks of Porter’s forces? 1 mark
  • Choose an example of an organization from the Saudi market and draw the matrix of Porter’s forces. What is the main force in this case? Assess the competitive advantage of your chosen organization in relation to these forces. Suggest solutions to improve its position in the market 3 marks

 

Note. To improve your answers, you are requested to use at least 5 recent scientific references, following the APA style.